Deficient fear recognition in regular cocaine users is not attributable to elevated impulsivity or conduct disorder prior to cocaine use
Autor: | Michael J. Morgan, JP Marshall |
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Rok vydání: | 2013 |
Předmět: |
Adult
Conduct Disorder Male medicine.medical_specialty media_common.quotation_subject Emotion classification Emotions Impulsivity Cocaine-Related Disorders Young Adult Cocaine users Surveys and Questionnaires medicine Humans Personality Pharmacology (medical) Psychiatry media_common Pharmacology Facial expression Recognition Psychology Antisocial Personality Disorder Fear Middle Aged medicine.disease Facial Expression Psychiatry and Mental health Cross-Sectional Studies Conduct disorder Case-Control Studies Impulsive Behavior Cocaine use Female Emotional facial expression medicine.symptom Psychology |
Zdroj: | Journal of Psychopharmacology. 27:526-532 |
ISSN: | 1461-7285 0269-8811 |
Popis: | We previously reported that regular recreational intranasal cocaine users exhibit impaired recognition of facial expressions of fear compared to occasional cocaine users and cocaine-naïve controls. The aim of the present study was to re-investigate this phenomenon after controlling for impulsivity, conduct disorder (CD) and anti-social personality disorder (ASPD). We employed a cross-sectional design to compare 31 cocaine-naïve participants, 35 occasional cocaine users and 20 regular recreational cocaine users. An emotional facial expression (EFE) task which comprised a male and a female face expressing six basic emotions morphed to differing degrees of emotional intensity was administered together with questionnaires to assess: CD, ASPD and impulsiveness. ASPD was not a significant covariate for EFE performance but impulsiveness and CD were significant covariates. After treating impulsiveness and CD as covariates we again observed a group difference in fear recognition ability attributable to the particularly impaired performance of regular cocaine users. This suggests that, although elevated impulsiveness and CD before the age of 15 years, may predispose a relative inability to recognize facial expressions of fear in adulthood, subsequent regular recreational use of cocaine represents an additional factor that is specifically associated with a selective deficit in fear recognition. |
Databáze: | OpenAIRE |
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