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Alogia is lack of content in the normal speech or it is the dearth of speech in psychology.

Anal Retentive

Anal retentive means the trouble experienced by the children during the development of anal personality trait. Those children have the interest of gathering things and saving them.


Anhedonia is the patient's inability to enjoy the pleasure from the normal life happenings such as eating, exercise and social/sexual interaction. The Anhedonia is the main symptoms of depression due to mood disorder according to international Statistical Classification of Diseases.


Archetype is defined as the original model of which all other similar persons, objects, or concepts are merely derivative, copied, patterned, or emulated. The term is often used in literature, architecture, and the arts to refer to something that goes back to the fundamental origins of style, method, gold standard, or physical construct.

Asperger's syndrome

Asperger's syndrome (AS), is a pervasive developmental disorder commonly referred to as a form of "high-functioning" autism. In very broad terms, individuals with Asperger's are considered to have normal to high intellectual capacity and an atypical social capacity.

Attitude (psychology)

Attitude is a key concept in social psychology. In academic psychology parlance, attitudes are positive or negative views of an "attitude object": a person, behaviour, or event. Research has shown that people can also be "ambivalent" towards a target, meaning that they simultaneously possess a positive and a negative attitude towards it.

Attributional biases

Attributional biases are cognitive biases which affect attribution -- the way we determine who or what was responsible for an event or action. Such biases typically rely on actor/observer differences -- people involved in an action view things differently from those people outside (observers).


Autism is considered a neurodevelopment disorder that manifests itself in marked problems with social relatedness, communication, interest, and behavior. The field of psychiatry has classified it in the DSM as one of the five types of pervasive developmental disorders (or autism spectrum disorders).


In psychology, avolition is a general lack of desire, motivation, and persistence. Commonly seen in patients with schizophrenia, those suffering from avolition will not start or complete any major tasks. This differs from anhedonia, where patients generally find task completion pleasureless.

Attribution Theory

Attribution theory is a field of social psychology, which was born out of the theoritical models of Fritz Heider, Harold Kelley, Edward E. Jones, and Lee Ross. Attribution theory is concerned with the ways in which people explain (or attribute) the behavior of others. It explores how individuals "attribute" causes to events and how this cognitive perception affects their motivation.