Sex differences in jealousy: evolutionary mechanism or artifact of measurement?

Two studies are presented that challenge the evidentiary basis for the existence of evolved sex differences in jealousy. In opposition to the evolutionary view, Study I demonstrated that a sex difference in jealousy resulting from sexual versus emotional infidelity is observed only when judgments are recorded using a forced-choice response format. On all other measures, no sex differences were found; both men and women reported greater jealousy in response to sexual infidelity. A second study revealed that the sex difference on the forced-choice measure disappeared under conditions of cognitive constraint. These findings suggest that the sex difference used to support the evolutionary view of jealousy (e.g., D. M. Buss, R. Larsen, D. Westen, & J. Semmelroth, 1992; D. M. Buss et al., 1999) likely represents a measurement artifact resulting from a format-induced effortful decision strategy and not an automatic, sex-specific response shaped by evolution.     

Developmental differences in judgments of recency and frequency: Quantitative or qualitative?

The basis of young children's performance of judgments of recency and frequency was investigated using a modified version of Huppert and Piercy's [Huppert, F.A., & Piercy, M. (1978). The role of trace strength in recency and frequency judgements by amnesic and control subjects. Quarterly Journal of Experimental Psychology, 30, 347–354] paradigm. Children aged 4 and 6 years viewed pictures of nameable objects presented either once or three times on either of two consecutive days. At test, children judged how recently (“today” versus “yesterday”) or frequently (once versus three times) each picture had been presented. Developmental improvements in performance were observed for judgments of recency and frequency. Evidence for responding based on episode-specific information was found for both age groups, showing that young children do not confuse recency of presentation with frequency of presentation. There was no evidence for a qualitative shift from reliance on trace strength to reliance on episode specific information across this age range.     

Gender differences in romantic relationship memories: who remembers? Who cares?

Two studies were conducted to assess patterns of gender differences in memory for romantic relationship events. Results suggested that people believe that women have better memory for romantic relationship events than men, that better relationship memory predicts higher levels of relationship well-being, and that the association between relationship memory and relationship well-being is somewhat stronger for women than for men. Women did tend to have somewhat better relationship memory than men, as assessed via subjective reports from both partners in mixed-sex relationships, and via the number of details partners provided when asked to recall a specific relationship event (i.e., their first date). Consistent with the lay theories, both own and partner’s better relationship memory predicted higher levels of relationship well-being; however, the association between better relationship memory and higher levels of relationship well-being was equally strong for both genders. Implications and future research directions are discussed.     

Response mode differences in perspective taking: Differences in representation or differences in retrieval?

Three experiments explored whether response mode differences in perspective taking result from different spatial representations or different retrieval processes. Participants learned object locations and then, while blindfolded, pointed to or verbally described object locations from perspectives aligned or misaligned with their facing direction and aligned or misaligned with the learning perspective. Pointing was facilitated from the perspective aligned with the body during testing. Similar facilitation occurred when verbally labeling, but only when conducted in the context of pointing (e.g., after pointing). Without this pointing context, or after third-person strategy instructions, the effect of body alignment was eliminated for verbal responses. Pointing was less responsive to context and strategy. Across all conditions, performance was facilitated for the learning perspective. Taken together, these experiments indicate that response mode differences are due to differences in the retrieval process, which varies with strategy, rather than differences in the organization of the underlying spatial memory.     

Developmental differences in recall: Encoding or retrieval?

First- and fifth-grade children and college adults (ages 6, 10, and 18 years, respectively) were presented a 30-item set of pictures to recall in a 4-trial study-test procedure. The stimuli were presented in one of three ways (encoding condition): randomly, blocked (according to categories), or sort (the subject was given the stimuli in random order and asked to sort them into categories). Recall was either free, cued, or constrained (retrieval condition). Results indicated that maximum adult recall was a function of the interaction of encoding and retrieval conditions, and that first- and fifth-grader's recall was influenced by retrieval conditions but not by encoding conditions. The blocked and sort encoding conditions did result in increased clustering relative to random encoding at all three ages, however. It was concluded that encoding conditions influence recall only as they effect the use of retrieval strategies.     

Angel or demon? Self-monitoring differences in the mental representations of current versus former romantic partners

We investigated whether high and low self-monitors had (a) segregated/integrated and (b) uniformly favorable (angelic)/uniformly unfavorable (demonic) mental representations of actual romantic partners. Self-monitoring was assessed using the 25-item Self-Monitoring Scale and the structure of mental representations was calculated using a modified segregation/integration measure. In Study 1, low self-monitors were more likely than high self-monitors to have (a) segregated and (b) disproportionally favorable mental representations of their current romantic partners. In Study 2, low self-monitors were more likely than high self-monitors to have (a) segregated and (b) generally unfavorable mental representations of their former romantic partners. Self-monitoring differences were not moderated in either study by relationship longevity or conflict.     

Significant differences in quality-of-life factors and their correlates: A function of differences in career orientations or gender?

This study compared the differences in the three quality-of-life variables of job satisfaction, life satisfaction, and mental health, and their correlates, based on differences in career orientation vs gender differences. Eight correlates, theorized to have an influence on the three quality-of-life factors were used to investigate the issue. One hundred and sixty-six working couples in a variety of organizations in the midwest and west coast regions of the United States offered a sample of 220 professionals and 120 nonprofessionals with a good mix of both genders in the two groups. The findings of the study indicated that: (1) career orientations had a far greater influence on the perceived quality-of-life and other factors than gender differences; (2) there was no strong support that the predictors differentially predicted the variance in any of the quality-of-life factors based on gender, or on the career orientations for the entire population; and (3) among the subset of the women in the sample, the multiple-role stress experienced did make a significant difference in how job satisfaction was predicted for the professional as opposed to the nonprofessional women. Further research directions and future trends are suggested.     

Attributions in marriage: state or trait? A growth curve analysis

Research on attributions in marriage rests on 2 assumptions. First, the attributions spouses make for their partners' behaviors have been treated as a style or a trait, reflecting enduring aspects of the perceiver. Second, attributions have been described as a causal factor in the development of the marriage over time. To evaluate the evidence for these assumptions, the authors analyzed 8 waves of longitudinal data from a sample of newlywed couples. Results offered no support for the idea of an enduring attributional style; attributions changed linearly, and changes in attributions were strongly associated with changes in marital satisfaction within each spouse. Nevertheless, controlling for these associations, initial levels of attributions predicted changes in marital satisfaction more than initial satisfaction predicted changes in attributions. Effects of neuroticism and effects on marital dissolution were also examined.     

Individual differences in preschool children: temperament or personality?

Individual differences among adults have generally been conceptualized in terms of personality theory and traits. In contrast, individual differences among very young children (birth to kindergarten) have generally been conceptualized in terms of temperament theory and traits. The present study compares and contrasts measures of temperament and personality in a sample of preschool children. Temperament traits were assessed with a well‐established measure (the Rothbart CBQ), and a new preschool rating instrument was used to assess personality traits from the five‐factor framework (M5‐PS). Indeed, a key purpose of this study was to further the development of the M5‐PS. Data were gathered on 122 preschool children who were rated by their teachers. Significant correlations were found between the temperament trait Surgency and the personality trait Extraversion, between the temperament trait Negative Affect and the personality trait Neuroticism, and between the temperament trait Effortful Control and the personality trait Conscientiousness. The overall pattern of correlational data suggests that individual differences in preschool children can be adequately described using the five‐factor theory, and that this framework may effectively subsume traditional theories of temperament. Preliminary support for the reliability and validity of the M5‐PS is offered. Copyright © 2010 John Wiley & Sons, Ltd.     

Sex differences in conformity: Instrumental or communal response?

Male and female introductory psychology students (N=88) were asked to read a clinical case history and the opinion consensus of either (a) their peers, (b) advanced psychology students, or (c) Ph.D. clinical psychologists that the patient should be hospitalized for at least 90 days (an extreme treatment). Subjects then indicated on a scale of 10 to 90 days, the length of hospitalization they thought best. In a significant interaction effect (sex of subject × expertise of source) males were least influenced by the opinions of their peers and increasingly influenced as the source became more expert. Females, however, seemed most influenced by their peer group, recommending longest hospitalization terms in that condition. Results are interpreted in terms of sex-role identification and the emergence of an instrumental (task) or communal set.     

Levels of processing: Qualitative differences or task-demand differences?

In nearly all reported orienting task studies, the question is asked before the item or items are presented. This paper reports two experiments wherein the question was asked after the item was presented. These experiments found that an orthographic orienting task did not produce poorer retention than a semantic orienting task when (1) the orthographic task was presented in such a way to ensure that the list items would be encoded as units and (2) the test was designed to eliminate the effect of encoding elaboration to positive-response orienting questions. It was concluded that the depth-of-processing effect was composed of two components. One of these is a task-demand component that affects the probability of encoding target items as identifiable units. The second component of processing depth is trace elaboration to positive-response questions. In most experiments, the two components combine to produce better memory performance for targets presented with semantic orienting questions. However, the two components can be examined independently of each other to determine the degree to which each contributes to a particular experimental effect.     

Gender differences in perception of self-orientation: software or hardware?

We evaluated the contribution of attentional strategy to the perception of self-orientation with and without a body tilt in the median plane. Reinking et al (1974 Journal of Personality and Social Psychology 30 807-811) found that the frame dependence of females on the rod-and-frame test could be mediated by instructions prompting them to focus on internal cues (ie arising from inside of the body). Here, we measured the influence of attentional instructions on the perception of the morphological horizon. Eleven females and thirteen males estimated their morphological horizon in an upright and a 45 degrees body tilt in the median plane under three instruction conditions. All participants first performed without attentional instructions. Then, participants performed under both internal and external attentional instructions. For females, but not for males, perception of morphological horizon was more footward in the supine than in the upright orientation. Although instructions did not eliminate gender differences, internal instructions allowed females to reduce their perceptual bias in the supine orientation.     

Sex differences in college student-teacher interactions: Fact or fantasy?

On-site observations analyzing student-teacher interaction for 50 college classes, matched by level, subject, and teacher's sex, revealed no difference in number and type of interactions in which male and female students participated. In female-taught classes, style differences were found: Male students' interactions were characterized by more student-teacher exchanges than females' interactions. From student questionnaires, differences in office visitation patterns were revealed, showing an apparent relationship to sex: Female students visited more female than male instructors. However, closer examination showed the student's major to be the key variable influencing visitation patterns. Results point to the need for testing a variety of variables in addition to sex before drawing conclusions about sex-related behavior.Ordering of authors was determined alphabetically. A CETA special project grant from the King-Snohomish Manpower Consortium (P. Dee Boersma, principal investigator) funded the research. The authors thank the Institute for Environmental Studies for providing space.     

Gender differences in personality: Biological and/or psychological?

The results of three empirical studies are reported in which the hypothesis is tested that differences in personality variables between the morphophenotype sexes can be explained by psychological sex-role orientation variables. Furthermore, it was expected that normative sex-role orientations (measured with the SRO-S and the AWS-S Scales) and gender-related self-concepts (femininity, masculinity, and androgyny measured with a modified BSRI) explain more variance in personality variables than morphophenotype sex. Besides these sex-role orientation variables, test and questionnaire data on verbal fluency, spatial reasoning, self-concept, anxiety, and aggressiveness were obtained in Study I from 50 young adults and their same-sex parents; in Study II, data on verbal fluency, spatial reasoning, self-concept, anxiety, and neuroticism were obtained from 120 university students; and in Study III, data on anxiety, locus of control, and Machiavellianism were obtained from 226 university students. The results confirm both hypotheses for the two aspects of intelligence studied, domain-specific self-concepts, different aspects of anxiety and aggressiveness, neuroticism, powerful others' externality in locus of control, and Machiavellianism. For all these personality variables the effect sizes of the psychological gender variables were larger than those of morphophenotype sex and reached medium to large values.     

Cross-cultural differences in tolerance for crowding: fact or fiction?

It is widely believed that cultures vary in their tolerance for crowding. There is, however, little evidence to substantiate this belief, coupled with serious shortcomings in the extant literature. Tolerance for crowding has been confused with cultural differences in personal space preferences along with perceived crowding. Furthermore, the few studies that have examined cultural variability in reactions to crowding have compared subgroup correlations, which is not equivalent to a statistical interaction. Although the authors found a statistical interaction indicating that Asian Americans and Latin Americans differ in the way they perceive crowding in comparison to their fellow Anglo-American and African American citizens, all four ethnic groups suffer similar, negative psychological distress sequelae of high-density housing. These results hold independently of household income.     

Sex differences in mate preferences revisited: do people know what they initially desire in a romantic partner?

In paradigms in which participants state their ideal romantic-partner preferences or examine vignettes and photographs, men value physical attractiveness more than women do, and women value earning prospects more than men do. Yet it remains unclear if these preferences remain sex differentiated in predicting desire for real-life potential partners (i.e., individuals whom one has actually met). In the present study, the authors explored this possibility using speed dating and longitudinal follow-up procedures. Replicating previous research, participants exhibited traditional sex differences when stating the importance of physical attractiveness and earning prospects in an ideal partner and ideal speed date. However, data revealed no sex differences in the associations between participants' romantic interest in real-life potential partners (met during and outside of speed dating) and the attractiveness and earning prospects of those partners. Furthermore, participants' ideal preferences, assessed before the speed-dating event, failed to predict what inspired their actual desire at the event. Results are discussed within the context of R. E. Nisbett and T. D. Wilson's (1977) seminal article: Even regarding such a consequential aspect of mental life as romantic-partner preferences, people may lack introspective awareness of what influences their judgments and behavior.     

Statistical inference in behavior analysis: Friend or foe?

Behavior analysts are undecided about the proper role to be played by inferential statistics in behavioral research. The traditional view, as expressed in Sidman's Tactics of Scientific Research (1960), was that inferential statistics has no place within a science that focuses on the steady-state behavior of individual organisms. Despite this admonition, there have been steady inroads of statistical techniques into behavior analysis since then, as evidenced by publications in the Journal of the Experimental Analysis of Behavior. The issues raised by these developments were considered at a panel held at the 24th annual convention of the Association for Behavior Analysis, Orlando, Florida (May, 1998). The proceedings are reported in this and the following articles.     

Individual differences in syllogistic reasoning: deduction rules or mental models?

Two studies examined the correlates of reasoning ability on a syllogistic reasoning task in subjects who lacked formal background in logic. The main issue addressed was the extent to which reasoning proficiency arises from the consideration of multiple possible set relations (mental models) as opposed to explicit or implicit reliance on deduction rules. Evidence for the use of both models and rules was obtained. Although "good" and "poor" reasoners differed even when time constraints were imposed (consistent with the supposition of a better set of rules among good reasoners), good reasoners showed more improvement and chose to take longer amounts of time when time constraints were removed, suggesting that they considered more alternatives than did the poor reasoners. A comparison between these two groups and a third group of subjects, graduate students who had studied logic, reveals striking differences in both accuracy and speed.     

Gender differences in empathic accuracy: Differential ability or differential motivation?

Following their qualitative review of the findings from 10 relevant studies, Graham and Ickes (1997) speculated that reliable gender‐of‐perceiver differences in empathic accuracy (a) were limited to studies in which the empathic inference form made empathic accuracy salient as the dimension of interest, and (b) therefore reflected the differential motivation, rather than the differential ability, of female versus male perceivers. These speculations were tested more rigorously in the present study, which examined a larger set of 15 empathic accuracy studies and applied the techniques of quantitative meta‐analysis to test Graham and Ickes’(1997) moderating variable hypothesis. The hypothesis was strongly supported, consistent with a motivational interpretation previously proposed by Berman (1980) and by Eisenberg and Lemon (1983), which argues that reliable gender differences in empathy‐related measures are found only in situations in which (a) subjects are aware that they are being evaluated on an empathy‐relevant dimension, and/or (b) empathy‐relevant gender‐role expectations or obligations are made salient.