The influence of time perspectives on compulsive buying is mediated by self-control

Technical Summary: The Influence of Time Perspectives on Compulsive Buying Mediated by Self-Control

Problem Statement
Compulsive buying is recognized as a severe, globalized phenomenon driven by an interplay between personality deficiencies and environmental factors, such as materialistic consumer culture. While the classification of compulsive buying oscillates between impulse control disorders, obsessive-compulsive spectra, and behavioral addictions, the underlying mechanisms remain complex. Previous research has established links between compulsive buying and low self-control, as well as specific time perspectives (TPs). However, no prior study has simultaneously examined the significance of TPs and self-control in relation to compulsive buying. Specifically, there is a gap in understanding whether self-control acts as the mediating mechanism through which various time perspectives (both individual dimensions and overall configurations) influence compulsive buying behaviors.

Methodology
The study employed a cross-sectional design with a sample of 299 German university students (165 females, 6 non-binary; M age = 23.6 years). Participants were recruited from three German universities between March and July 2024.

• Measures:
  • Time Perspectives: Assessed using the German short version of the Zimbardo Time Perspective Inventory (ZTPI), consisting of 10 items (two per dimension) measuring Past-Negative, Past-Positive, Present-Hedonistic, Present-Fatalistic, and Future orientations. The study also calculated three overall configuration indices: Deviation from a Balanced Time Perspective (DBTP), the revised DBTP (DBTP-R), and Deviation from a Negative Time Perspective (DNTP).
  • Self-Control: Measured using the German short version of the Self-Control Scale (SCS-K-D), a 13-item Likert scale where high scores indicate high dispositional self-control.
  • Compulsive Buying: Assessed via the German Compulsive Buying Scale (GCBS), a 16-item instrument yielding a score from 16 to 64.
• Analytical Approach:
  • Hierarchical Multiple Regressions (HMRs) were conducted to test the direct effects of TPs on self-control and compulsive buying.
  • Structural Equation Modeling (SEM) with bootstrapping (5,000 iterations) was used to test mediation models.
  • The PROCESS macro was utilized to analyze isolated mediation models for the overall TP configurations (DBTP, DBTP-R, DNTP).
  • Gender was included as a control variable in all models.

Key Results
The analysis supported the hypothesis that self-control mediates the relationship between time perspectives and compulsive buying.

1. Individual Time Perspectives:

   • Future Orientation: Positively associated with self-control and negatively associated with compulsive buying. It exerted a significant reducing effect on compulsive buying both directly and indirectly through self-control.
   • Present-Fatalistic: Negatively associated with self-control and positively associated with compulsive buying. It showed a significant enhancing effect on compulsive buying, mediated by reduced self-control.
   • Past-Negative: Negatively associated with self-control. While it showed a trend toward increasing compulsive buying, its direct effect was non-significant in the final SEM, though the indirect effect through self-control was significant.
   • Present-Hedonistic: Negatively associated with self-control but was excluded from the final model for compulsive buying, suggesting its influence may be more diffuse across impulsive behaviors rather than specific to compulsive buying.
   • Past-Positive: Not significantly linked to compulsive buying, indicating it is not a vulnerability factor.

2. Overall Time Perspective Configurations:

   • DBTP and DBTP-R: Both measures of deviation from a balanced time perspective showed significant total effects on compulsive buying. Crucially, the indirect effects via self-control were significant, indicating full mediation. The revised metric (DBTP-R) demonstrated a stronger total effect than the original DBTP.
   • DNTP: Results were mixed. The PROCESS macro analysis supported a significant indirect effect (protective effect), but the AMOS SEM model showed non-significant total and direct effects. This suggests that while moving away from a negative profile is beneficial, the active presence of a balanced perspective is a more potent factor.

3. Gender: Females reported significantly higher levels of compulsive buying than males. However, gender did not interact with the core mediation pathways, suggesting the psychological mechanism (TPs $\rightarrow$ Self-Control $\rightarrow$ Compulsive Buying) operates similarly across genders.

Key Contributions

• Mediation Mechanism: The study provides robust evidence that self-control is the key psychological mechanism mediating the influence of time perspectives on compulsive buying. It integrates Zimbardo's Time Perspective Theory with the strength model of self-control, demonstrating that TPs are not merely cognitive frames but foundational dispositions affecting the resources available to resist temptation.
• Operationalization of TP: The research validates that the influence of TPs on compulsive buying holds true whether TPs are operationalized as individual dimensions (e.g., Future, Present-Fatalistic) or as overall configurations (DBTP, DBTP-R).
• Differentiation of Risk Factors: The study distinguishes between specific TP dimensions, identifying Future orientation as an adaptive factor and Present-Fatalism and Past-Negative as risk factors, while clarifying that Past-Positive is not a vulnerability.

Significance and Claims
The authors claim that this research elucidates a key mechanism through which subjective relationships with time influence buying behavior. The study posits that a Future time perspective serves as a "psychological shield," whereas Past-Negative and Present-Fatalistic perspectives act as vulnerabilities by compromising limited self-control resources.

Theoretically, the paper bridges the gap between macro-level temporal personality traits and micro-level dysfunctional shopping behaviors by positioning self-control as the mediating link. The authors assert that the overall balance of one's time perspective is a powerful and parsimonious factor in shaping life outcomes through the governance of impulse control.

From an applied perspective, the findings suggest that interventions for compulsive buying could incorporate techniques from Time Perspective Therapy to alter temporal biases. However, the authors explicitly note limitations regarding the cross-sectional design, which prevents definitive causal inferences, and the use of a student sample, which limits external validity. They conclude that while the mediation model offers theoretically plausible insights, future experimental studies are required to validate the direction of associations and test situational manipulations of time perspectives.