The ironic effect of thought suppression refers to the phenomenon in which individuals trying to rid their mind of a target thought ironically experience greater levels of occurrence and accessibility of the thought compared with individuals who deliberately concentrate on the thought (Wegner, 1994, doi:10.1037/0033-295X.101.1.34). Ironic effects occurring after thought suppression, also known as rebound effects, were consistently detected by previous meta-analyses. However, ironic effects that occur during thought suppression, also known as immediate enhancement effects, were found to be largely absent. In this meta-analysis, we test Wegner’s original proposition that detection of immediate enhancement effects depends on the cognitive load experienced by individuals when enacting thought suppression. Given that thought suppression is an effortful cognitive process, we propose that the introduction of additional cognitive load would compete for the allocation of existing cognitive resources and impair capacity for thought suppression. Studies ( k = 31) consistent with Wegner’s original thought-suppression paradigm were analyzed. Consistent with our predictions, rebound effects were observed regardless of cognitive load, whereas immediate enhancement effects were observed only in the presence of cognitive load. We discuss implications in light of ironic-process theory and suggest future thought-suppression research.

M. S. (2019). Differential effects of perceptions of equal, favourable and unfavourable autonomy support on educational and well-being outcomes. Contemporary Educational Psychology. Highlights Perceptions of equal autonomy support yield optimal levels of need satisfaction  Equal autonomy support predicts enjoyment and course grades indirectly via autonomous motives and needs  Self-determination theory is sufficient in explaining effects observed for equal autonomy support

Thought suppression is a self-regulatory strategy commonly used to avoid unwanted thoughts although it can ironically make unwanted thoughts more intrusive and accessible. To reduce these ironic effects, it is important to explore mechanisms underlying effective suppression. The present study recruited 126 undergraduate students and examined the influence of distractor content on suppression outcomes by examining perceived satisfaction and immersion of distractors as mechanisms of effective suppression. Based on self-determination theory, we proposed that distractors associated with the satisfaction of the psychological need for autonomy would mitigate ironic effects of thought suppression because they would be perceived as satisfying and immersive. Results showed that need-supportive distractors reduced intrusion frequency because they were indeed perceived as more satisfying. Our findings also point towards the unique satisfying properties of distractors involving psychological need satisfaction because effects of single, pleasant and personally relevant distractors have been controlled for. Findings are discussed using Wegner's (1994) theories of thought suppression and principles of self-determination theory.

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