Seven tenths incorrect: heterogeneity and change in the waist-to-hip ratios of Playboy centerfold models and Miss America pageant winners

Drawing on an article by Singh (1993), many discussions of the evolutionary psychology of heterosexual male preferences have reported a remarkable consistency in the waist-to-hip ratios of Playboy centerfold models and Miss America pageant winners over time. We reexamine the measurement data on these American beauty icons and show that these reports are false in several ways. First, the variation in waist-to-hip ratios among these women is greater than reported. Second, the center of the distribution of waist-to-hip ratios is not 0.70, but less than this. Third, the average waist-to-hip ratio within both samples has changed over time in a manner that is statistically significant and can be regarded as mutually consistent. Taken together, the findings undermine some of the evidence given for the repeated suggestion that there is something special--evolutionarily hard-wired or otherwise--about a specific female waist-to-hip ratio of 0.70 as a preference of American heterosexual males.     

Time to “Get” Religion? An Analysis of Religious Literacy Among Journalism Students

A survey (N = 503) tested religious knowledge for journalism students and nonjournalism students. Journalism students scored poorly on basic religious knowledge and fared no better than nonjournalism students. When advertising and public relations majors were added to the journalism majors to create a new mass communication major variable, that group scored higher than students studying something else. Within the mass communication major, there were differences by chosen field, with photojournalism, print journalism, and public relations students scoring highest. The results indicate that while journalism students and nonjournalism students agree on the need for journalists to have religious literacy, journalism schools are falling short of making sure journalistic training is resulting in proper levels of religious literacy.     

Prevalence of Problem and Pathological Gambling in Parkinson’s Disease

Pathological gambling (PG) has been identified in patients with Parkinson’s disease (PD) treated with dopamine agonists suggesting that dysregulation of brain dopaminergic activity may contribute to the development of gambling problems. The current study was undertaken to further establish the prevalence of problem and PG in patients with PD, identify any clinical correlates, and determine if psychiatric or substance use co-morbidity contributes to the increased prevalence of problem and PG. A cross-sectional survey of 140 serially recruited moderate to severe PD patients was undertaken utilizing the Canadian Problem Gambling Index, Alcohol Use Disorders Identification Test, Drug Abuse Screening Test, Beck Depression Inventory, Beck Anxiety Inventory, and Mini-Mental State Exam augmented by chart review, completed over an 8 month period. The 12 month prevalence of problem and PG in PD was 9.3% compared to 1.6% in the general population within a comparably aged sample. The increased prevalence of problem and PG in the PD group was related to dopamine agonist use and younger age, but not co-morbidity. Most subjects with problem and PG reported their gambling increased after being diagnosed with PD and starting treatment. The results suggest that brain dopaminergic activity is involved in the underlying neurobiology of problem and PG.     

Socioeconomic background and racial earnings inequality: A propensity score analysis

Does a racial earnings gap exist among individuals who come from similar childhood socioeconomic backgrounds? Is the racial earnings gap larger or smaller for those from higher or lower socioeconomic origins? This research addresses these questions by taking a counterfactual approach to estimating the residual racial pay gap between non-Hispanic black and white men from the 1979 National Longitudinal Survey of Youth. The findings indicate that the racial earnings gap is larger among those from lower-middle class and working class childhood backgrounds than among those from upper-middle class backgrounds, for whom the racial pay gap is indistinguishable from zero. Compared to their more advantaged counterparts, black men from lower-middle and working class backgrounds have more difficulty rising above their socioeconomic origins relative to white men from similar social class backgrounds. Racial earnings equality among those from upper-middle class backgrounds suggests that the high levels of racial inequality often observed among those with college and professional degrees may in fact reflect heterogeneous childhood socioeconomic backgrounds among the college educated—backgrounds that continue to have an effect on earnings despite individual academic achievements.     

BARE MARKET: Campus Sex Ratios,Romantic Relationships,and Sexual Behavior

Using a nationally representative sample of college women, we evaluate the effect of campus sex ratios on women's relationship attitudes and behaviors. Our results suggest that women on campuses where they comprise a higher proportion of the student body give more negative appraisals of campus men and relationships, go on fewer traditional dates, are less likely to have had a college boyfriend, and are more likely to be sexually active. These effects appear to stem both from decreased dyadic power among women on campuses where they are more numerous and from their increased difficulty locating a partner on such campuses.     

Implications of Success and Persistence for Public Sector Performance

Public sector organizations collect vast amounts of information that often goes unused. Information may serve a symbolic role to imply that decision makers are using rational decision processes, or it may be collected to rationalize a preconceived decision and develop or maintain public support. Over-collection of irrelevant information or under-analysis of existing information for decision implications leads to excessive public information costs with limited public benefit. The study discusses the role systematic information misalignment plays in the public sector and considers its implications for public agency performance. The concept is evaluated using examples from the National Aeronautics and Space Administration.

Vertical modeling: analysis of competing risks data with a cure fraction

In this paper, we extend the vertical modeling approach for the analysis of survival data with competing risks to incorporate a cure fraction in the population, that is, a proportion of the population for which none of the competing events can occur. The proposed method has three components: the proportion of cure, the risk of failure, irrespective of the cause, and the relative risk of a certain cause of failure, given a failure occurred. Covariates may affect each of these components. An appealing aspect of the method is that it is a natural extension to competing risks of the semi-parametric mixture cure model in ordinary survival analysis; thus, causes of failure are assigned only if a failure occurs. This contrasts with the existing mixture cure model for competing risks of Larson and Dinse, which conditions at the onset on the future status presumably attained. Regression parameter estimates are obtained using an EM-algorithm. The performance of the estimators is evaluated in a simulation study. The method is illustrated using a melanoma cancer data set.

     

Sequential imputation for models with latent variables assuming latent ignorability

Models that involve an outcome variable, covariates, and latent variables are frequently the target for estimation and inference. The presence of missing covariate or outcome data presents a challenge, particularly when missingness depends on the latent variables. This missingness mechanism is called latent ignorable or latent missing at random and is a generalisation of missing at random. Several authors have previously proposed approaches for handling latent ignorable missingness, but these methods rely on prior specification of the joint distribution for the complete data. In practice, specifying the joint distribution can be difficult and/or restrictive. We develop a novel sequential imputation procedure for imputing covariate and outcome data for models with latent variables under latent ignorable missingness. The proposed method does not require a joint model; rather, we use results under a joint model to inform imputation with less restrictive modelling assumptions. We discuss identifiability and convergence‐related issues, and simulation results are presented in several modelling settings. The method is motivated and illustrated by a study of head and neck cancer recurrence. Imputing missing data for models with latent variables under latent‐dependent missingness without specifying a full joint model.     

Bullying Victimization Trajectories for Sexual Minority Adolescents: Stable Victims,Desisters, and Late‐Onset Victims

Sexual minority adolescents are bullied more frequently than heterosexual peers. Research is lacking on their rates of general and sexual orientation bullying victimization. The present study identified (1) the rate, onset, and desistance of general and sexual orientation bullying victimization, (2) the rate of bullying victimization trajectories, and (3) risk and protective factors across trajectories. A life history calendar method and thematic analysis were employed with a sexual minority adolescent sample (N = 52, 14–20 y/o). General bullying began at age 5 and declined after age 12, with sexual orientation bullying increasing throughout adolescence. Late‐onset victim (34.6%) was the most common trajectory, followed by stable victim (28.9%), desister (23.1%), and nonvictim (13.5%). Differences in risk and protective factors were found across trajectories.