Class notes

7B - Substance-related disorders

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Course
PSYO2220 - Abnormal Behaviour

Institution
Dalhousie University (Dal )

with pictures! 7B - Substance-related disorders *Mini-lecture 1 : Psychoactive substances - Liking vs. wanting "Liking" vs. "wanting": example • Motivational value:  Substance use: • The distinction ... o Initial liking may... o Build tolerance and... • Over the course ...

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Uploaded on April 10, 2021
Number of pages 4
Written in 2020/2021
Type Class notes
Professor(s) Erin sparks
Contains All classes

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7B - Substance-related disorders
Thursday, March 4, 2021
7:43 AM
*Mini-lecture 1 : Psychoactive substances - Liking vs. wanting
"Liking" vs. "wanting": An example
 Consider the distinction between "wanting" and "liking":
o "Liking" food
 Feelings of enjoyment; bliss; pleasure…
 Hedonic value: how much we cognitively "like" something
 Subjective "goodness"
o "Wanting" food
 Excitement; agitation; maybe even aggression
 Motivational value: how much we "want" something
 Incentive salience and reward

Substance use: "Liking" a drug
 The distinction is helpful in understanding the maintenance of substance use disorders:
o Initial liking may help initiate substance use, but over the course of
addiction the person may come to want the drug more than they like it
o Build tolerance and need more to get the same effect / pleasure
 Over the course of their addiction, an individual may experience:
o Narrowing behavioral repertoire
o Craving, preoccupation, reduced control over use
o Increased tolerance and withdrawal
o Low self-esteem, denial, rationalization, conflicts over dependency…

*Mini-lecture 2 : Clinical description of substance-related disorders
Substance-related disorders
 "A problematic pattern of [________ substance} use leading to clinically significant distress
or impairment, as manifested by at least two… symptoms within a 12-month period."
o Polysubstance (many substances at once) use is common!!
 Substance-related Disorder (opioids)

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