Although rumination following a provocation can increase aggression, no research has examined the processes responsible for this phenomenon. With predictions derived from the General Aggression Model, three experiments explored the impact of two types of post-provocation rumination on the processes whereby rumination augments aggression. In Experiment 1, relative to distraction, self-focused rumination uniquely increased the accessibility of arousal cognition, whereas provocation-focused rumination uniquely amplified the accessibility of aggressive action cognition. In Experiment 2, provocation-focused rumination uniquely increased systolic blood pressure. In Experiment 3, both types of rumination increased aggressive behaviour relative to a distraction condition. Angry affect partially mediated the effects of both provocation- and self-focused rumination on aggression. Self-critical negative affect partially mediated the effect of self-focused rumination but not provocation-focused rumination. These findings suggest that provocation-focused rumination influences angry affect, aggressive action cognition, and cardiovascular arousal, whereas self-focused rumination increases self-critical negative affect, angry affect, and arousal cognition. These studies enhance our understanding of why two types of post-provocation rumination increase aggressive behaviour.

Participants (31 young, 27 young-old, and 28 old-old) read 12 narratives, pausing periodically to think aloud. The resulting protocols were analysed for 17 types of inferences and for non-content (off-target) information. Factor analysis yielded three inference factors: character, causal and physical. Age difference across these factors were not significant, suggesting that inferential processing architecture may be stable. Each narrative also included an unfamiliar word. Immediately following each narrative, four definition choices and a definition rating scale were presented. The definition scores of old-old adults were lower than young and young-old. In addition, definition scores were negatively related to non-content comment counts. Taken together, these findings suggest that off-target working-memory intrusions may interfere with interpretation specificity in older adults even though semantic architecture remains stable. This study extends the aging and inference literature by addressing age-related changes across categories of inferential processing and by including a sample of old-old adults.

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In the reported experiment, participants considered future fantasies about owning an electronics product, negative realities that impeded the realization of that fantasy (e.g., insufficient money), or simultaneously considered both. Consistent with Fantasy Realization Theory (Oettingen, 1996), only participants who simultaneously considered fantasies and reality formed stronger (weaker) goals to purchase their fantasy product if they read an advertisement for an electronics store leading them to expect that doing so was feasible (unfeasible). Purchasing goals were not influenced by expectations in the other conditions. The theoretical and practical contributions of these findings as well as future directions for research are discussed.

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