Psychology Models

These models and simulations have been tagged “Psychology”.

Completion of  IM-15119  (which added patches to  IM-14058 ). Unconscious affective dynamics Josh Epstein's Agent Zero Book  webpage   Part II p.89 with 2 agent types, spatial patches and location aware, mobile occupying (blue) agents
Completion of IM-15119 (which added patches to IM-14058). Unconscious affective dynamics Josh Epstein's Agent Zero Book webpage  Part II p.89 with 2 agent types, spatial patches and location aware, mobile occupying (blue) agents

Double loop version of  IM-8908  Based on  1990 SDR Article . Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between distur
Double loop version of IM-8908 Based on 1990 SDR Article. Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't predict the consequences of behavior. These consequences are maintained despite disturbances. See also Double loop learning and Nurse Thinking Insights. See also IM-9273 for DLL LAIR model
The following model models fear expression. The model implements an expectations model of fear expression in the brain.    In this model, four broad brain regions are identified: the sensory/association cortices (SC), the lateral and basal lateral amygdala (FA), the basal medial amygdala (BA), and t
The following model models fear expression. The model implements an expectations model of fear expression in the brain.

In this model, four broad brain regions are identified: the sensory/association cortices (SC), the lateral and basal lateral amygdala (FA), the basal medial amygdala (BA), and the ventromedial prefrontal cortex (PFC).

The sensory/association cortices signal the perception of stimuli to FA and the PFC. The FA and PFC each form an expectation that the subject will (FA) and will not (PFC) experience an intrinsically fearful stimulus (IFS). The PFC inhibits activation of the FA. The amount of inhibition is proportional to the PFCs confidence that the subject will not encounter an intrinsically fearful stimulus. The modulated signal is transmitted to the BA which then stimulates other brain regions that induce the physical changes associated with fear.

Both the FA and PFC adapt their expectations based on experience. This model uses two scaled geometric sum probability estimation models (PEM) to represent the behavior of the expectation circuits within the FA and PFC. In reality, the PFC and FA probably estimate the probability that the subject will encounter an IFS based on the ease of recall of positive (instances in which the observed stimulus predicted the IFS) and negative (instances in which the observed stimulus did not predict the IFS) memories involving the observed and expected stimuli. The memories associated with positive instances are probably more easily recalled as the amygdala sends signals to the hippocampus that strengthen episodic memory formation during stressful events. Accordingly, the PEM associated with the PFC has an additional decay term that weakens the negative expectations over time, modeling memory decay. This decay term, allows us to model spontaneous fear recovery.

Experimentation suggests that fear extinction does not, principally, involve forgetting fear associations. Rather, it involves learning new associations that suppress previously learned fear associations. Brain imaging experiments suggest that fear expression and suppression are generated by different brain regions; the amygdala (expression) and the ventromedial prefrontal cortex (suppression). The theory that fear extinction does not involve forgetting fear associations was supported by observations of fear recovery, in which it was observed that subjects recover fear faster than they did during fear induction, which suggests that fear associations persist after fear extinction. To model this, we associate two different sensitivity coefficients to the FA PEM and the PFC PEM. This allows us to express the relative stability of fear associations stored within the FA in comparison to those stored within the PFC.

This model uses a simple linear model to represent fear suppression by the PFC. We define a parameter, ki, that defines the maximum proportion of fear generated by the FA that can be suppressed by the PFC. In reality this property corresponds to the strength of the neural projections from the ventromedial prefrontal cortex to the amygdala. The neurons within this pathway are serotonergic, chronic deficiency in serotonin may inhibit the structural development of this pathway contributing to anxiety regulation disorders. Medications such as serotonin reuptake inhibitors (SSRIs) can increase the amount of serotonin available within this region and over time may foster development. Accordingly, we allow ki to evolve over time within the model.

Significantly, our model posits the existence of intrinsically fearful stimuli. It assumes that certain stimuli, such as extreme pain, and fear, are innately anxiogenic. Expectation models, posit that the fear induced by most stimuli however are the result of learned associations. Presented with a non-intrinsically fearful stimlus (NIFS), the amygdala estimates the probability that the NIFS signals an IFS. The fear elicited by the NIFS is proportional to the estimated probability of encountering the IFS.
10 months ago
 Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

WIP Mostly a combination of Barone 1998 Advanced Personality book and Charles Hampden-Turner 1982 book Maps of the Mind
WIP Mostly a combination of Barone 1998 Advanced Personality book and Charles Hampden-Turner 1982 book Maps of the Mind
Experimenting with body image issues.
Experimenting with body image issues.
Three Agent Model of  IM-13669 . Unconscious affective dynamics Josh Epstein's Agent Zero Book  webpage   See spatial patches version  IM-15119    
Three Agent Model of IM-13669. Unconscious affective dynamics Josh Epstein's Agent Zero Book webpage 
See spatial patches version IM-15119
 
 Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

How Facebook use can affect the mental health of adolescents.
How Facebook use can affect the mental health of adolescents.
WIP Addition of  Emotion Regulation IM  to Clone of  IM-9007  Double loop version of  IM-8908  Based on  1990 SDR Article .  See also Double loop learning and Nurse Thinking Insights. See also  IM-9273  for DLL LAIR model. Also Azjen's Theory of planned behavior which could be framed in COM-B WIP at
WIP Addition of Emotion Regulation IM to Clone of IM-9007 Double loop version of IM-8908 Based on 1990 SDR Article.  See also Double loop learning and Nurse Thinking Insights. See also IM-9273 for DLL LAIR model. Also Azjen's Theory of planned behavior which could be framed in COM-B WIP at IM-51900
4 months ago
 Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

Double loop PCT  IM-9007  extended to show hierarchical PCT and goal conflict psychotherapy. A simulation structure for  IM-233044   See also a Suicide crisis and PCT  IM-173189   simulation structure
Double loop PCT IM-9007 extended to show hierarchical PCT and goal conflict psychotherapy. A simulation structure for IM-233044  See also a Suicide crisis and PCT IM-173189  simulation structure
 Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

Love affairs and Differential equations. From Michael J Radzicki (1993) Dyadic processes,tempestuous relationships, and system dynamics Syst. Dyn. Rev. 9 (1) :79-94 

3 months ago
Based on  1990 SDR Article . Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't pr
Based on 1990 SDR Article. Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't predict the consequences of behavior. These consequences are maintained despite disturbances. See IM-9007 for a double loop version
11 months ago
 The fact
that we all strive to reduce psychologically inconsistent thoughts  is a well-researched phenomenon. When we hold
two conflicting thoughts in our heads we feel an overwhelming desire to reduce
this conflict. This desire can be a powerful driver in the way we behave. Most
of us are aware at

The fact that we all strive to reduce psychologically inconsistent thoughts  is a well-researched phenomenon. When we hold two conflicting thoughts in our heads we feel an overwhelming desire to reduce this conflict. This desire can be a powerful driver in the way we behave. Most of us are aware at some level that if we took the threat of climate change seriously we would need to completely change our routines and the way we behave. Flying off on holiday would be out of the question. Swimming pools would be a past luxury. Most of us would need to give up our cars and become vegetarians. The list can be extended almost endlessly. Very often, subconsciously, we try to reduce troubling and inconvenient facts by minimizing, ignoring or even by denying them. Could this be why we hardly talk about climate change even in the face of increasingly frequent extreme weather events and obvious signs that it is occurring now?

This subject needs to be openly talked about between us and in the press. The seriousness of global warming makes it a necessity.  Only when this happens will politicians have the space and incentive to act on our behalf. But before this can happen we need to be aware of the reason why we avoid talking about this subject – this graph tries to illustrate the harmful dynamic that could be responsible for it.

This diagram illustrates the behavioral cycle, which models the sequence of steps that people undergo when responding to situations. The diagram highlights potential risk factors that may lead to problematic behavioral patterns, and may be useful in identifying potential interventions for correcting
This diagram illustrates the behavioral cycle, which models the sequence of steps that people undergo when responding to situations. The diagram highlights potential risk factors that may lead to problematic behavioral patterns, and may be useful in identifying potential interventions for correcting them.

Disclaimer: this diagram reflects my personal life-practices and understandings and do not constitute professional medical advice.
last month
 Delusions, false
theories and ideas about the world, can be dangerous when acted upon.  I
would count as delusional beliefs, belief in 'creationism', 'market fundamentalism' and also the belief that 'climate change is not anthropogenic'.  The CLD
seeks to illustrate the dynamic that makes it diffic

Delusions, false theories and ideas about the world, can be dangerous when acted upon.  I would count as delusional beliefs, belief in 'creationism', 'market fundamentalism' and also the belief that 'climate change is not anthropogenic'.

The CLD seeks to illustrate the dynamic that makes it difficult, if not impossible, to disabuse holders of fanatical beliefs by simply using rational arguments and facts. The professor of psychology, Jerry Kroth, said that delusions can be seen as an incipient mental illness. He also said that 'repression' and 'denial' are by-products of delusions. It seems that rational arguments are useless when facts are simply denied: the dynamic shows that trying to refute a strongly held irrational belief merely strengthens it. 

Based on  1990 SDR Article . Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't pr
Based on 1990 SDR Article. Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't predict the consequences of behavior. These consequences are maintained despite disturbances. See IM-9007 for a double loop version
Based on  1990 SDR Article . Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't pr
Based on 1990 SDR Article. Control systems act to make their own input match internal standards or reference signals. Competent control systems create illusions of stimulus response causality. Stimulus-response theory can approximate the relationship between disturbance and action, but it can't predict the consequences of behavior. These consequences are maintained despite disturbances. See IM-9007 for a double loop version