男性择偶策略改变的前提：自感配偶价值提高

研究分为问卷调查与实验研究两部分。首先，40名女性和33名男性完成有关自感配偶价值评价（SPMV）和择偶偏爱策略的问卷调查，问卷调查结果是实验研究中数据分析的基线。其次，第二部分实验开始后，被试会得到实验者编造的他人潜在择偶对象的积极正面评价，其目的在于提高被试的SPMV。可以假设，男性的SPMV与随意性行为的认同或追求有正相关，男性SPMV的提高将会更加偏爱短期的性策略；女性SPMV与随意性行为不存在相关，女性SPMV的提高不会改变女性的性策略。研究结果显示，SPMV高基线水平的男性更加认可随意性行为，男性SPMV的提高与短期策略选择的增加有关。另外，SPMV提高，而不是一般自尊的提高，与择偶策略的改变具有相关。本研究结果没有证实，与长期稳定的性关系相比，SPMV的基线水平或是提高与女性对随意性行为的认同或追求之间存在相关

Enhancement of Self-perceived Mate Value Precedes a Shift in Men's Preferred Mating Strategy

Seventy-three participants (40 women, 33 men) completed questionnaires conceming their self-perceived mate value (SPMV) and preferred mating strategy in two separate sessions, with baseline measures collected during the first stage. At the commencement of the second testing session, participants were provided with a fictitious positive assessment of their worth as a mate in an attempt to manipulate their SPMV upward. It was hypothesized that higher SPMV and the endorsement or pursuit of casual sexual activity would be positively related in men and that raising men's SPMV would increase the bias toward this mating strategy. A strong relationship between SPMV and mating strategy was not expected in women, nor was increasing SPMV expected to alter women's mating strategy. As predicted, high baseline levels of SPMV were positively related with the endorsement of casual sexual activity in men, and an elevation in men's SPMV following the manipulation was associated with the increased choice of this mating strategy. Moreover, it appeared that the rise in SPMV specifically, rather than an increase in global self-esteem, was related to the shift in mating strategy. Little evidence was found to suggest that baseline SPMV or increases to SPMV were related to women's endorsement or pursuit of casual versus more committed sexual relationships.