| Hypostatic model of personality | |
| Concepts Personality aspect (hypostasis) Personality subsystem Personality dimension Personality axis Intrapersonal relation Interpersonal relation Related people | |
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The term hypostasis can cover a wide range of personality-related entities usually known as type, stage, trait, system, approach.[1] The history of the concept can be traced back to Peirce's hypostatic abstraction, or personification of traits. Different authors have described various dimensions of the self (or selves), personality dimensions and subpersonalities.[2] Contemporary studies link different aspects of personality to specific biological, social, and environmental factors.
The work on subpersonalities was integrated into a hypostatic model.[3] The model describes personality aspects and dimensions, as well as intra- and interpersonal relations. Not the person whole and alone, nor the relationship, but the relation between parts of person(s) is held as a central element that promotes both personal and social organization and disorganization. Personality is viewed as both an agency and a construction, along with its development and psychopathology, as the model is accompanied by specific methods of assessment and therapy, addressing each of the personality dimensions. The hypostatic relations of the human mind also imply the existence of a hypostatic model of consciousness, representing the contents of consciousness as an identity of various aspects, different only with respect to each other, but tending to coincide in a certain aspect of their consideration.[4]
The hypostatic model of personality is a way of viewing the many sides of a person's character. The model states that a person can behave and appear to others in many ways, depending on how that person is, but also on how that person is viewed by the others (scientists included). It also states that people are not one-sided, but are a little bit of everything. For example, today someone can be mean, and tomorrow they can be good. How people are and present themselves at one moment or another also depends on their biological state, and the situation or environment (the people and things around them). For example, sometimes the most cowardly person may become the greatest hero, if they are called to save someone's life.
In order to be improved, all these "sides" of a person have first to be scientifically assessed.
The concept of hypostasis as the shared existence of spiritual and corporal entities has been used in a number of religious and intellectual settings. The word hypostasis means underlying state or underlying substance, and is the fundamental reality that supports all else.
The Neoplatonic philosopher Plotinus writes about three hypostases: Soul, Intellect (nous) and the One.
The Christian view of the Trinity is often described as a view of one God existing in three distinct hypostases.
In the Kabbalah, the ten sephirot are the hypostases of God, capable of being known, as opposed to his absolute essence, which is inaccessible to knowledge.
Charles Sanders Peirce introduced the concept of hypostatic abstraction, which is a formal operation that takes an element of information, such as might be expressed in a proposition of the form "X is Y", and conceives its information to consist in the relation between a subject and another subject, such as expressed in a proposition of the form "X has Y-ness".[5]
Hypostatic ethics has been described as the study of values in themselves, with all their relations, as agents and/or influencers of cognition and behavior.[6]
In linguistics, Leonard Bloomfield introduced the concept of hypostasis[7] to describe the personification of an object or state in sentences as I'm tired of your buts and ifs.
Aaron Rosanoff's theory of personality distinguishes seven dimensions (normal, hysteroid, manic, depressive, autistic, paranoid, and epileptoid), which can be epistatic or hypostatic dimensions, the manifestation of the latter being concealed or inhibited by the former.[8]
In the philosophy of mind, double-aspect theory is the view that the mental and the physical are two aspects of the same substance.[9] In his Principles of Psychology,[10] William James describes four aspects of the self:
Cognitive psychologist Ulric Neisser later described five "selves":[11]
Carl Rogers distinguishes between the real self (the person as she is), and the ideal self (the person as the world told her she ought to be). Incongruence between these selves leads to feelings of anxiety.[12]
Facet theory asserts that social-behavioral concepts are multivariate, and therefore they could be better described in terms of their "facets" and dimensions rather than as undifferentiated wholes;[13] this can also be done using multidimensional scaling.[14]
Hans Eysenck's three factor model of personality contains the independent dimensions of extraversion, neuroticism, and psychoticism; these different dimensions are caused by the properties of the brain, which themselves are the result of genetic factors.[15]
The Minnesota Multiphasic Personality Inventory uses ten clinical scales measuring dimensions whose development and correlations in an individual determine her pathological tendencies.[16]
The Big Five model describes five personality dimensions that affect the whole behavior, with each dimension having several facets.[17] The Diagnostic and Statistical Manual of Mental Disorders used an axial (dimensional) and categorical system of diagnosis. DSM-IV takes into account five dimensions: mental state, global personality, physical condition, environment, and global functioning of the person.[18]
Differentiation between various mental states and behavior patterns on the basis of their relation with brain and social environment became commonplace in contemporary psychology and sociology.[19] [20] [21] On the biopsychological side, functional MRI studies have shown that different behavioral and mental activities involve specific patterns of brain activation, corresponding to psychological states.[22] C. Robert Cloninger defines three independent dimensions of personality, which are related to heritable variation in patterns of response to specific types of environmental stimuli; variation in each dimension is strongly correlated with activity in a specific central monoaminergic pathway:[23]
On the social-environmental side, role theory[24] defines the role as a set of connected behaviors, rights and obligations as conceptualized by actors in a social situation. Thus, roles can be:
e.g. teacher, taxi driver;
Intersectionality is a methodology of studying "the relationships among multiple dimensions and modalities of social relationships and subject formations".[25]
Roberto Assagioli uses the term "subpersonalities" for the social roles the person plays in different groups, roles that are mere "characters" played by the person, being different from her central inner Self.[26]
As a core idea of his transactional analysis, Eric Berne asserts that there are at least three "persons" in each of us, calling them our "ego states": the Child (the emotional in us), the Adult (the rational in us), and the Parent (the authoritarian in us).[27]
As functioning as a “society of mind”,[28] the self is populated by a multiplicity of “self-positions” that have the possibility to entertain dialogical relationships with each other.[29]
Internal Family Systems Model combines systems thinking with the view that mind is made up of relatively discrete subpersonalities each with its own viewpoint and qualities.[30]
At a metatheoretical level, the hypostatic model argues that persons have several kinds of aspects, including, but not limited to:[31]
Many schools of psychotherapy see subpersonalities as relatively enduring psychological structures or entities that influence how a person feels, perceives, behaves, and sees him- or herself.[32] According to the hypostatic model, human personality consists of four components or hypostases, which are patterns of behavior related to specific systems in the brain, and are conceptualized by virtually every culture as being characteristic and/or essential to humans:[33] [34] [35]
One of these aspects can dominate the person, and lead to the development of – and adherence to – various philosophical views and schools:[36]
Human behavior is generated through the interaction and coupling of these human aspects, creating personality dimensions.The six behavioral, mental, and personality dimensions are:
These dimensions correspond to the following types of mental operations:[39]
In every specific task of daily life, one of the first four dimensions (cognitive, practical, affective, or expressive) is dominant, being at the center of the experience, whereas the other three are subordinated to it. Regulative and adaptive dimensions are constantly acting as a background throughout the behavioral process.[40] The six personality dimensions are described as follows:[41]
This is a composite view in which the six dimensions combine in complex ways to form "the web and woof of human personality".[42] Within this view, the concrete, developing person may be represented as a point or a small three-dimensional object. Her trajectory for growth is to expand from that point in multiple dimensions to become a sphere, developing her four specific dimensions of knowledge, capacity, power, and enjoyment.
In addition to this "doing" dimension of personality, there is also a "being made" dimension, including the constitutive axes – each one formed of a mental content (which can be cognitive, verbal, motivational, or pragmatic, depending on the personality aspect), a mental and behavioral activity related to it (which can be cognitive, practical, affective, expressive, regulative, or adaptive), and their brain and environmental correlates, respectively.[43] Each constitutive axis consists of two couples: one formed by a brain factor and the corresponding behavior, shaping a mental (memory) content and structuring a "trait" or recurrent behavior, and the other one formed by that mental content and its environmental correlate, generating the specific behavior (functioning). For example, assertive behavior is determined by environmental factors and assertiveness, whereas assertiveness itself is the product of both brain predisposition and assertive behavior. An obsessive-compulsive individual maintains his obsessions (content) if often left alone with his predisposing brain and ritualistic behaviors. A shy person (trait) displays less shy behavior when in a familiar environment. This model provides a picture of the emergent relations between personality structuring, mental functioning (behavior), environment, and biology.[44]
Research using functional magnetic resonance imaging of the brain suggests that cognitive and affective-expressive forms of communication and self-reflection have distinct neural bases.[45] Clinical findings have long suggested that verbalizations are often very incoherent when the individual is trying to put into words something deeply emotional.[46] Identification of words naming emotions (happy, neutral, sad) was found to be faster than identification of corresponding facial expressions. Recognition of face expressions was more difficult to suppress in favor of the recognition of words than vice versa, the two conditions presenting different patterns of brain activation. These experimental results suggest that reading and recognition of face expressions are stimulus-dependent and perhaps hierarchical behaviors, hence recruiting distinct regions of the medial prefrontal cortex.[47]
Research indicates that the representations of faces and objects in ventral temporal cortex are widely distributed and overlapping, face stimuli eliciting response patterns distinct from those elicited by object stimuli.
The phenomena that have been characterized clinically as “unconscious communication” may be defined systematically as emotional communication, which occurs both within and outside of awareness.[48]
Research suggested that the fundamental mechanism at the basis of the experiential understanding of others’ actions is the activation of the mirror neuron system. A similar mechanism, but involving the activation of viscero-motor centers, underlies the experiential understanding of the emotions of others.[49]
Activation of mirror neurons in a task relying on empathic abilities without explicit task-related motor components supports the view that mirror neurons are not only involved in motor cognition but also in emotional interpersonal cognition.[50]
Evidence suggests that there are at least two large-scale neural networks: frontoparietal mirror-neuron areas related to perceptual-motor interactions with others, and cortical midline structures that engage in processing information about the self and others in cognitive and evaluative terms.[51]
According to the model, intrapersonal relations can be:[52] [53]
Interpersonal relations can also be:[52] [54]
The locus of a relational disorder "is on the relationship rather than on any one individual in the relationship."[56]
The self is the self-reflective dimension of mental life, which has long been considered as the central element and support of any experience, as the notion of "subject of experience" suggests.[57] There is only one "me", but she is not always center stage. Sometimes people are so focused on a task that they forget themselves altogether. The self is in fact at the center of the experience only during self-evaluation. In cognitive, affective, practical, and expressive tasks, consistency of specific operations involved in accomplishing the tasks was found to be significantly higher than consistency of the results of self-assessment involved in the same tasks.[58]
Standard ways to tackle the self by considering self-evaluation do not target the self in its specificity. Instead, what is specific to the self is the subjective perspective, which is not intrinsically self-evaluative but rather relates any represented object to the representing subject.[59]
As adaptive and regulative axes of personality provide integration of consciousness and personality, certain unconscious phenomena may result from the incomplete integration of one of these axes.[60] For example, in subliminal perception, the adaptive, perceptual-motor axis is not properly integrated with other mental operations, and in dissociative disorders, the regulative axis is the one affected. If one of the axes does not function properly, both consciousness and performance in specific tasks are impaired.
Intelligence and personality are often seen as fundamentally different, a fact which ignores both the performance aspect of personality, and intelligence-related traits. Thus, cognitive and emotional instruments are artificially separated from their energetic and value contents.[61] The concept of dimensional capacity is therefore proposed as a binder of behavioral performance and content.[61]
The hypostatic model suggests that human behavior is usually the result of the random interference of two separate behavior systems: the "animal" system (biological adaptation) and the "human" system (social adaptation), both having the same biological underpinnings and partially sharing the same behavioral repertoire with different effects, not directly related.[62] For example, while homosexual behavior does not have biological (reproductive) effect, it has social adaptive value in cultures that permit it or, as in ancient Greece, require it. Also, heterosexual behavior can have reproductive effect, but has no social adaptive value in monks or nuns. Cosmetic surgery has no biological value, but can be highly valued by society, while taking sleeping medication may have a biologically adaptive effect, but may not be socially adaptive in ascetic cultures. People can eat because they are hungry (biological adaptation), or because they like good food or want to enjoy the company of others (social adaptation). They can have sex to fulfill their sexual and reproductive needs (biological adaptation), or to fulfill their love, have children to bear their name, or simply have a good time together (social adaptation). People can use the same instinctual or learned behavior to different adaptive purposes, biological or social.[62]
In critical situations, biological and social fields of adaptation converge, forming an integrated, bio-social adaptation system:[63] confronted with new and spreading disease and risk factors, modern medicine made people live longer, healthier, more productive lives, and that, in turn, set the ground for further progress of civilization. Nobel laureate Ralph M. Steinman prolonged his life with the help of his own scientific discoveries, and this allowed him to continue research in cancer immunotherapy.[64]
Preliminary experiments needing extensive verification[63] have suggested that in well-rested subjects, engaging in "biological" behavior (eating, sex) does not lead to lowering of mental energy levels, as measured with a self-assessment scale, and engaging in "psychosocial" behavior (cognitive tasks) does not lead to lowering of physical energy levels (measured with a similar scale). However, in subjects with exhaustion both results were positive (feeding-related and sexual activities lowered both physical and mental energy levels, and engaging in cognitive tasks did the same).[63] These results have been interpreted as an indication that biological and social systems of adaptation are energetically independent in "normal" conditions, and become energetically integrated (create a common pool of energy) in exhausting, "heavy duty" situations.[63]
Subjects who had the possibility to choose freely between performing different cognitive, practical, affective, and expressive tasks reported that they chose each task because they either a) felt the need to do it, b) considered this was the task they could perform most efficiently in given circumstances, or c) for both previous reasons.Not one of the three reasons above was statistically prevalent. This research suggested that human freedom can be scientifically interpreted in terms of an internal selection of environmental stimuli and internal variables, a selection which has a randomly variable, cognitive or affective locus.[65] People with transient mental disorders, as well as people without disorders acted according to a probabilistic model, whereas those with chronic disorders showed a more deterministic pattern of behavior.
Development pertains to long term change versus stability of personality. According to the hypostatic view, the actual development of a person is the result of the opposition between stimulating and inhibiting factors of development, factors that are biological and environmental in nature.[66] If stimulating factors are dominant, then developmental progress results (new acquisitions are made); if inhibiting factors are dominant, then the result is developmental regression (acquisitions are lost). If the two kind of factors are of relatively equal force, development is stagnant. Development can be accelerated, decelerated, or of uniform speed, depending on the dynamics of the relation between stimulating and inhibiting factors.[66]
| Type of factors | Effect on personality development | Examples |
|---|---|---|
| Biological | Stimulating | positive heredity, good nutrition |
| Inhibiting | negative heredity, bad nutrition, trauma, disease | |
| Environmental | Stimulating | good education, positive life events |
| Inhibiting | bad education, negative life events |
Some of the characteristics of personality development during childhood and adolescence are summarized in the table below.
| Age | Regulation/adaptation strategies | Expressive behavior | Relational building | |
|---|---|---|---|---|
| 0 to 12 months | Modulating reactivity | Expressive synchronization with others. Discriminating others' expressions. | Social play. Social referral. | |
| 12 to 24 months | Awareness of own emotional reaction | Self-evaluation generates expressive behavior | Anticipating different feelings towards different persons | |
| 2.5 to 5 years | Regulation of emotions. Awareness of own feelings. | "As if" expressive behavior in play | Understanding of relations and behavior expectancies | |
| 5 to 7 years | Regulation of shame | Fabricated expressions in the presence of peers | Coordinating affective and expressive scripts | |
| 7 to 10 years | Developing control strategies | Using expressive behavior to modulate relational dynamics | Multiple affective reactions towards the same person | |
| 10 to 13 years | Developing self-control in stressful situations | Differentiating genuine from controlled emotional expressions | Affective and expressive scripts related to social roles | |
| 13+ years | Awareness of personal emotional cycles | Self-presentation strategies | Increased awareness of reciprocal emotional communication[67] |
During adulthood, the person is usually capable of creation and self-determination, and development can follow paths such as these:[68]
The unusual, the unnatural, and the counter-cultural in the area of mental life have been – in all ages – "subject of astonishment and reflection for individual reason, object of exclusion and confinement for social action", being met with "reserve or even repulsion by the public and with interest and even fascination by thinkers".[69] In all cultures, aspects of internal disorganization and adaptive inefficiency of the person have generally been considered abnormal, whether they were referenced as "demonic possession", "madness", "mental illness", or "deviance" by different societies and theories.[69] People displaying an efficient disorganization of personality and behavior do their job in spite of the fact that they are not well organized, and are generally described as "strange" by others, while those presenting an inefficient organization are not successful in what they do, although their behavior is consistent; they have a high rate of failure, caused by a low level of acquisitions and/or functioning.[70]
Efficient adaptive patterns are those in which specific adaptive behavior is displayed only in situations that require it ("activating situations"), whereas inefficient adaptive patterns are those in which adaptive behavior is inappropriate in the given situation. Inefficient adaptive patterns can be hyperadaptive, when adaptive operations are active in both activating and non-activating situations (as in mania), or hypoadaptive, when adaptive operations remain inactive in both types of situations (as in depression).[71]
People tend to neglect stimuli with low cognitive or affective significance to them, as well as forget excessively intense emotions and information that is too difficult for them to understand.[72] Experiments performed on individuals which were given cognitive and affective (evaluative) tasks much above their current levels of cognitive and emotional competence led to difficulties in remembering the difficult tasks, associated with lowering of performance in previously mastered tasks.Improving performance in simple, repetitive tasks in anxious patients improves memory of failed tasks as anxiety symptoms decrease.
The model of personality components and axes was extended to familial-organizational and societal levels.[73] [74] [75] The model was also applied to the study of the historical evolution of human civilization in the process of globalization, as well as in the analysis of literary characters seen as novel creations "in humans' image" and part of the "neoverse" – the universe created by the author of a literary work.[76]
The hypostatic model uses several qualitative parameters for the assessment of personality investigation and intervention; these parameters can be applied to any scientific endeavor.[77]
Nearest-neighbor comparison of two persons in a sample involves comparing a person A with the person B who has the closest match to A on one or more given criteria. It is also called the method of hypostatic definition, because of "defining" a person through her genus (in this case the nearest neighbor) by outlining her differentia. By comparing two very similar persons and trying to detect the differences between them, the researcher obtains a deeper knowledge of both persons.[79]
The steps of the technique are:
In this kind of humanistic "psychological engineering", setting the goals for personality change is completely non-normative and non-judgemental. There is nothing wrong that must be remedied, no disease to cure, but an end state to be reached, like in the following goal formulations by the subjects and/or their families:
The model uses the following methods of assessment and intervention:
The psycho-molecular method uses specific tasks in order to influence specific neurotransmitter systems. Through the control of the environment which is selectively enriched or deprived, some of the subject's brain areas can be stimulated or inhibited systematically, leading to changes in the seric levels of the metabolites of certain neurotransmitters, associated with clinical improvement in burnout individuals. Behavioral approaches have a critical impact on molecular patterns of autoregulation, leading to the assumption of a bio-psycho-socio-molecular model of autoregulation, including stress and pain. Thus, molecules and behavior may be seen as two sides of the same problem in pain and stress relief. Psycho-molecular techniques can be stimulating or inhibiting. Stimulating techniques involve the presence of environmental materials that allow a single type of activity (cognitive, practical, affective, or expressive). For example, the subject sits in a room where he has nothing else to do except read. Inhibiting techniques selectively exclude from the subject's environment materials that allow one specific type of activity, leaving all the other types available (for example, the subject can look at paintings, watch sports on TV, prepare his food, but has no books or other learning material in his room).
Stimulating techniques are:
Inhibiting techniques are:
The control of the effects of these techniques is made through clinical scales and biochemical tests monitoring serum levels of metabolites of several stimulating and inhibiting neurotransmitters: dopamine (homovanillic acid), norepinephrine (3-methoxy-4-hydroxyphenylglycol), and serotonin (5-hydroxyindoleacetic acid). Although less spectacular than with psychopharmacological methods, the effect of psycho-molecular therapy is more complex and natural, and needs to be associated with psychopharmacological and psychotherapeutic treatments.
Relational (or direct relations) therapy (RT) is a method of psychotherapy aimed at changing the relations between the four dimensions of doing – thinking, acting, feeling, and expressing, both within the person and in her relationships.[92] [93] [94] [95]
The main goal of RT is improving client's communication and relationships through:[96]
1. Replacing crossed intrapersonal relations with direct intrapersonal relations; instead of expressing what she thinks or acting out what she feels, the client should act the way she thinks and express what she feels. Characterological self-blame (through attributing affective and personal, relatively nonmodifiable sources to own actions) has been proved to be more depressogenic than behavioral self-blame (through attributing cognitive and impersonal, controllable sources to actions). For example, female victims of rape who said to themselves 'It was me, it was something I've done that provoked this' were more depressed than those who said 'The fact that I was walking through that part of the town caused the attack'.[97]
2. Replacing crossed interpersonal relations with direct interpersonal relations; instead of feeling about others' acts or thinking about what others express, the client should think about others' acts and feel what others express. Many problems originate in acting to please or hurt others, and in being pleased or hurt by others' actions.[98]
The indications of RT consist of all kinds of relational problems that may arise in dating, family and work relationships, casual social encounters, as well as anxiety, depression, and other mental problems. In the case of problems in stable relationships, both partners should be assessed and participate in sessions, if needed.
During therapy sessions, client and therapist promote direct relations between each other. For this they are required:
Relational therapy is in accord with other psychotherapeutic approaches in understanding the nature of human relationships and the therapeutic mechanisms: many forms of psychotherapy, such as psychoanalysis, person-centered therapy, and cognitive therapy, aim ultimately to create direct relations between thoughts and actions, and between feelings and expressions, so as the client's thoughts really get in touch with her feelings, and her expressions really support her actions.[99]
The initial assessment in RT has two main objectives:[100]
A typical session of RT involves the following steps:[101]
1. The client presents her crossed relations, as they occurred since the last session;
2. The therapist asks the client how she thinks the correct relation should sound like, and tells her that, if she could not say;
3. The therapist, along with the client, tries to identify crossed intrapersonal relations in people with whom the client interacts;
4. The therapist asks the client about what she thinks she could do to counteract those crossed relations, in order to improve communication relationships with those people, and makes suggestions to her, if she has no ideas.
A final assessment through interview and questionnaire is made, to see:[102]
1. If there are residual crossed relations in the client's life;
2. If she is able to prevent new crossed relations to occur;
3. If she is able to counteract crossed relations in others with whom she interacts, in order to maintain good communication relationships with those people;
4. To what extent the initial problems for which she addressed the therapist have been solved.
Interpersonal problems: relationship management
Problem definition: I decided that's better for me to leave my boyfriend, and I tried to show him that (expressing thoughts through behavior).
Problem solution: I decided that's better for me to leave my boyfriend, and I told him that (actively and explicitly communicating thoughts).[103]
Problem definition: My girlfriend wants to make up with me, and I'm thrilled about that, because that means that she loves me (feeling about the other's intended actions).
Problem solution: My girlfriend wants to make up with me, and I think that's better for both of us (thinking about the other's intended actions).
Problem definition: I love my girlfriend, and I always make her gifts (acting out feelings).
Problem solution: I love my girlfriend, and I'm always gentle with her (expressing feelings).
Problem definition: I can see in her eyes that she thinks I'm smart (thinking about other's expressions as indicating supposed thoughts).
Problem solution: I can see in her eyes that she likes me (feeling other's expressions).An intrapersonal problem: fear of going to college
First, client and therapist identify crossed intrapersonal relations, through the following scenario:[104]
The first step of therapy consists of creating direct relations between feelings and expressions, and between thoughts and actions:
In the second step of therapy, the natural result of establishing direct relations is that the problem ceases to exist:[106]
Relational therapy can be applied in families, organizations, and classrooms to change crossed relations and thus increase performance and satisfaction in work and learning.[107] For example, confronted with a poor homework of a student, a teacher may think that by doing the homework that way, the student wants to defy him. If that is true, the problem is with the student – she tends to express her feelings indirectly, through her actions (feeling-action crossed intrapersonal relation). If that is not true, and the student was just lazy or incompetent, the problem is with the teacher – he tends to take personally and process emotionally the acts of others (action-feeling crossed interpersonal relation). Whatever the source of the problem, relations counselor uses both individual and couple interventions, based on drawing a relational matrix of the group, which shows crossed relations. If, for some reason, one of the partners could not be changed, the other may be taught to compensate his crossed (distorted) relation through another crossed relation, the result being an accurate communication at both rational and emotional levels. For example, if one of the partners is busy and does not have time to spend with the other, but does not dare to tell her that, and instead expresses that through his body language, the other learns to interpret this body language not as emotional indifference (what it seems to be), but as a sign of busyness (what it actually is), and thus she will not be hurt anymore.[108]
Karl Jaspers criticized the hypostatic method as used in the study of personality, arguing that:
Some presentations of the hypostatic model have been criticized for containing too many neologisms that make it difficult to understand,[109] and for being "doomed to be incomplete".
The model was praised for being "original" and "provocative", and for inaugurating the field of "concrete-systemic" or "hypostatic" psychology. It alludes to understanding the effects of illicit substances and disease, as well as the underlying change in personality which likely ensues in relation. It shows that personality is believed to be static and relatively in-changeable, whereas ideology is more dynamic than personality. The model was cited as one of the reference sources on the subjects of self, character, and personality.[110]