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An addiction is, by definition, a form of compulsion, and involves operant reinforcement. For example, dopamine is released in the brain's reward system and is a motive for behaviour (i.e. the compulsions in addiction development through positive reinforcement). [19] There are two main differences between compulsion and addiction.
Psychological dependence develops through consistent and frequent exposure to a stimulus. After sufficient exposure to a stimulus capable of inducing psychological dependence (e.g., drug use), an adaptive state develops that results in the onset of withdrawal symptoms that negatively affect psychological function upon cessation of exposure.
Studies have proven that genetic variations and differences in our neurobiology can alter an individual's vulnerability to developing an addiction. [32] Estimates have shown that around 40%-60% of the susceptibility of an individual to develop an addiction to drugs, nicotine, and alcohol is allotted to genetic variables. [ 32 ]
There is an additional connotation to the term habituation which applies to psychological dependency on drugs, and is included in several online dictionaries. [6] A team of specialists from the World Health Organization assembled in 1957 to address the problem of drug addiction and adopted the term "drug habituation" to distinguish some drug-use behaviors from drug addiction.
Models of addiction risk that have been proposed in psychology literature include an affect dysregulation model of positive and negative psychological affects, the reinforcement sensitivity theory model of impulsiveness and behavioral inhibition, and an impulsivity model of reward sensitization and impulsiveness. [1] [5] [6]
According to Groves and Thompson, the process of habituation also mimics a dual process. The dual process theory of behavioral habituation relies on two underlying (non-behavioral) processes; depression and facilitation with the relative strength of one over the other determining whether or not habituation or sensitization is seen in the ...
The etymology of the term addiction throughout history has been misunderstood and has taken on various meanings associated with the word. [207] An example is the usage of the word in the religious landscape of early modern Europe. [208] "Addiction" at the time meant "to attach" to something, giving it both positive and negative connotations.
Substance dependence, also known as drug dependence, is a biopsychological situation whereby an individual's functionality is dependent on the necessitated re-consumption of a psychoactive substance because of an adaptive state that has developed within the individual from psychoactive substance consumption that results in the experience of withdrawal and that necessitates the re-consumption ...