engleski

The Moderating Role of Control Causality Orientation in the Relationship between Basic Psychological Needs and Cannabis Consumption

According to the Self-Determination Theory, the needs for competence, relatedness, and autonomy are basic and universal. Regular satisfaction of all three needs is essential for optimal functioning, while their thwarting could lead to the various negative outcomes. Some satisfaction of the competence and relatedness needs, but a thwarting of the need for autonomy, results with development of a strong control causality orientation (Deci & Ryan, 2008). This orientation is characterised by initiating and regulating behaviours by pressure from internal or external forces (Deci & Ryan, 1985). This research tested a model that incorporated control causality orientation, basic psychological needs and cannabis consumption. The sample consisted of 438 (37.9% males and 62.1% females ; mean age M=19.62, SD=0.826) participants comprising first and second-year students at the University of Zagreb that lived in student dormitories. An adapted version of control subscale of the General Causality Orientations Scale (Deci & Ryan, 1985), and General Need Satisfaction Scale (Gagné, 2003) were applied. Cannabis consumption was 18 operationalized as the number of days a person has consumed cannabis in their lifetime. The results of moderation analysis conducted using PROCESS macro for SPSS (Hayes, 2014) showed that interaction effect of control causality orientation and competence on cannabis consumption was not significant. On the other hand, interaction effect of this motivational orientation and autonomy on cannabis consumption were significant, as well as the interaction effect of this orientation and relatedness on cannabis consumption. Among average and high controlled participants, increase in satisfaction of autonomy need was followed by a decrease in cannabis consumption. Also, among mentioned participants, increase in satisfaction of relatedness need was followed by a decrease in cannabis consumption. Implications of these findings on prevention will be discussed.

control causality orientation ; basic psychological needs ; cannabis consumption

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