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Some evolutionary psychological theories concerning drug use suggest individuals consume drugs to increase reproductive opportunities. Drug use can increase reproductive fitness because drug use can (1) advertise biological quality, sexual maturity, or availability, (2) decrease inhibitions in mating contexts, and/or (3) enhance associative ...
Unlike negative affect, positive affect is related to addiction in both high and low forms. For example, individuals high in positive affect are more likely to engage in risky behaviour, such as drug use. Individuals with high positive affect in response to use are more likely to seek out substances for hedonic reasons. Conversely, low positive ...
Lindesmith's work on drugs began with his questioning of the nature of addiction in a 1938 essay entitled "A sociological theory of drug addiction".This paper appeared in the American Journal of Sociology and involved in-depth interviews with 50 so-called addicts.
One of the earliest theories of addiction was the reward effect. This theory suggests that an individual consumes a substance that will elicit a pleasurable effect. The individual continues to use this substance to recreate this same feeling, ultimately becoming addicted to the sensation they receive from the substance. [34]
The gateway drug effect (alternatively, stepping-stone theory, escalation hypothesis, or progression hypothesis) is a comprehensive catchphrase for the often observed effect that the use of a psychoactive substance is coupled to an increased probability of the use of further substances.
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 ...
The common biomolecular mechanisms underlying addiction – CREB and ΔFosB – were reviewed by Eric J. Nestler in a 2013 review. [3] Genetics and mental disorders may precipitate the severity of a drug addiction. It is estimated that 50% of healthy individuals developing an addiction can trace the cause to genetic factors. [4]
Many neurobiological theories of addiction place repeated or continued use of the drug in the path of addiction development. For example, researchers have theorized that addiction is the result of the shift from goal-directed actions to habits and ultimately, to compulsive drug-seeking and taking. [18] [19]