Recently, a new method of considering successful intentional thought suppression has emerged. This method, the think/no-think paradigm has been utilized over a multitude of settings and has fairly robustly demonstrated the ability to interfere with memory recall. The following experiment examined the effect of intentional thought suppression on recognition memory of nonverbalizeable shapes. In this experiment, participants learned word–shape targets. For some of the pairs, they rehearsed the shape when presented with the word; for others, they suppressed the shape when (...) presented with the word. Finally, participants were shown multiple shapes, one at a time, and asked to identify which they had previously seen as paired with a word. Results of the experiment indicated that, similar to results involving words, participants were less accurate in identifying suppressed shapes, as compared to rehearsed shapes. Implications of these findings are discussed. (shrink)

Directed forgetting is a successful method for thought control whereas thought suppression is notoriously ineffective. We tested a specific hypothesis about what difference between the two paradigms causes the difference in outcomes. Both paradigms instruct participants to suppress certain thoughts, but in thought suppression experiments participants are also told to report intrusions of unwanted thoughts. We added a condition to the typical directed forgetting experiment that instructed participants to report intrusions. When participants tried to forget a word list but also (...) reported intrusions, forgetting did not occur. The results are important for understanding control of conscious contents and have implications for practicable applications of individual thought control. (shrink)