*Personality Disorders

Personality disorders are categorized in the DSM-5 and are characterized typically by enduring maladaptive patterns of behavior, cognition, and inner experience, which deviate markedly from the expectations of the individual's culture.

Characterized by irresponsible and antisocial behavior extending from childhood into adulthood.
Symptoms include:
- Impulsivity and seeking immediate gratification.
- Lack of empathy and absence of conscience.

Defined by grandiose fantasies and behaviors.
Primary needs involve:
- A strong necessity for admiration.
- Low levels of empathy towards others.

Characterized by:
- Extreme instability in self-image and emotions.
- Intense fluctuations between love and hate in relationships.
- High frequency of manipulative suicidal threats and behaviors.

Characterized by:
- Social discomfort and extreme timidity.
- A pervasive fear of negative evaluation.
- Persistent feelings of inadequacy.

Characterized by:
- Perfectionism and a preoccupation with mental and interpersonal control.
- Rigid and inflexible behaviors in approach to life.

Marked by:
- Odd thoughts, behavior, and appearance.
- Extreme discomfort in social situations.

Also referred to historically as sociopathy or psychopathy.
Recognized as one of the most interpersonally destructive and emotionally harmful disorders.
Gender prevalence: Male to female ratio is approximately 3:1.

Defined by key traits, including:
- Lack of conscience and guilt.
- Minimal anxiety or concern for others.
- Impulsivity and inability to delay gratification.
- Actual criminal and antisocial behaviors are observed within this subset of individuals who may also be called psychopaths.
Traits can be categorized into two clusters:
1. Selfishness: Characteristics such as callousness and manipulation.
2. Impulsivity: Exhibits instability and social deviance.
Individuals may display charm and manipulation, often perceived as attractive or competent to others.
Capable of rationalizing harmful behavior without remorse, showcasing a flat emotional response to others' pain.
Failure to learn from punishment leads to repeated negative behaviors including habitual lying, early aggressive or sexual behaviors, theft, and vandalism.
A requirement for diagnosis includes evidence of antisocial behavior before the age of 15.

Strong support for genetic predisposition; twin and adoption studies indicate higher concordance rates in identical twins regarding antisocial behavior.
Heritability estimates for genetic factors related to ASPD range from 0.40 to 0.50.
Observations show that if a biological father has a criminal record, but the adoptive father does not, the child’s risk of developing ASPD roughly doubles.

Dysfunctional areas include the amygdala and prefrontal cortex, leading to poor emotional arousal and behavioral inhibition.
Individuals with ASPD often demonstrate low autonomic reactions under stress and exhibit low resting heart rates.
The MAOA gene (Monoamine oxidase A), which regulates serotonin levels, is implicated in impulsive aggression; dysregulation linked to antisocial outcomes.
Research shows that importantly antisocial brains respond less to negative stimuli and more impulsively to both positive and negative stimuli.

Involves the failure of superego development leading to no internal guilt or limitations on the id.
Inadequate identification with caregivers is another crucial factor.

Individuals exhibit a tendency to fail to think about long-term consequences of their actions, often making impulsive decisions characterized by immediate desires.
Deficits in executive function can be prevalent in these individuals.

Children may imitate aggression or disregard from parents, suggesting that observed behaviors can reinforce antisocial behavior.
Peer groups can additionally reinforce such behaviors, contributing to the development of ASPD.

Factors contributing include low self-esteem and dependence, which may lead to poor impulse control and as a consequence, ineffective avoidance learning.
Deficits in fear conditioning as noted by Raine; individuals may fail to learn healthy fear responses, leading to no conscience being developed in the context of negative behaviors.
Some individuals may experience instability in identity, which can compound the issues of impulsivity and difficulties in interpersonal relationships.