824 AINSWORTH AND MANER Participants completed the the mating prime wrote a detailed per about an expe m to fecln Results To test for the hypothesized four-way interaction,priming con mpleting the noise blast aggression paradigm ine condition d the =0.64.p< e their s xual orientation.The RSOI h how thin th ften do emalengt orien t-term articipant sex among ally ur Men with Male Target Women with Female Targe 15 15 1 b=1.90 1 0.5 05 iea b=54 0 -0.5 b=.22 --UnrestrictedRSO -Restricted RSol -15 Control Control Matins Experimental Condition Men with Female Targe Women with Male Target 1.5 1.5 1 05 b=1.22 0 b=215* -Unrestricted RSOI 5 Control Matine Experimental Condition Figure 1. sive behavior toward a sam sex nartner a Procedure. Participants completed the priming procedure detailed in the previous experiments. Participants who completed the mating prime wrote a detailed personal essay about an experience that led them to feel intense sexual desire, and participants who completed the control prime wrote a detailed personal essay about an experience that led them to feel intense happiness. Following the priming procedure, participants completed the Brief Mood Introspection Scale (Mayer & Gaschke, 1988) to measure mood and arousal. Then participants viewed a picture of either a male or female confederate who posed as their ostensible partner before completing the noise blast aggression paradigm. Following the aggression paradigm, participants completed the Revised Sociosexual Orientation Inventory (RSOI; Penke & Asendorpf, 2008) to measure their sociosexual orientation. The RSOI assesses individual differences in willingness to engage in casual sexual relationships and includes items evaluating sexual behavior (“With how many different partners have you had sex within the past 12 months?”), attitudes (“Sex without love is OK”), and desire (“How often do you have spontaneous fantasies about having sex with someone you just met?”). High scores indicate a relatively unrestricted sociosexual orientation (i.e., orientation toward short-term mating). RSOI scores ( .89) did not vary by experimental condition (p .16), target sex (p .67), or their interaction (p .30). Results To test for the hypothesized four-way interaction, priming condition, participant sex, target sex, and sociosexuality (standardized within gender), and all centered interactions were entered into a regression equation. (Regression was used because RSOI was a continuous variable.) The results for unprovoked aggression indicated a significant four-way interaction among priming condition, participant sex, target sex, and sociosexuality, 0.64, p .01, partial r .21. See Figure 1. To interpret the pattern, we tested the three-way interaction of priming condition, participant sex, and sociosexuality within male and female targets. The interaction was significant for male targets, – 0.37, p .01, partial r –.26, but not female targets, 0.50, p .62, partial r .04, indicating that there were no differences in aggression toward female targets. To further deconstruct the pattern within male targets, we tested the two-way interaction of priming condition and participant sex among sexually unrestricted participants (1 SD Figure 1. Experiment 3: The mating prime increased aggressive behavior toward a same-sex partner among unrestricted men, but not among restricted men or women. The mating prime failed to increase men’s aggressive behavior toward an opposite-sex partner. b refers to unstandardized regression coefficients. RSOI Revised Sociosexuality Orientation Inventory. ** p .01. 824 AINSWORTH AND MANER This document is copyrighted by the American Psychological Association or one of its allied publishers. This article is intended solely for the personal use of the individual user and is not to be disseminated broadly.