Parametric branch and bound

The paper describes a procedure for mixed integer programming that allows branches to be imposed ‘by degrees’, which can subsequently be revised or weeded out according to their relative influence. It is an adaptive approach in which the branch and bound tree can be manipulated and restructured. The approach also yields measures of the costs of imposing the branches that lead to integer solutions, thus providing a built-in form of sensitivity analysis for evaluating the effect of integer restrictions.     

A Half Century of Mate Preferences: The Cultural Evolution of Values

The qualities people believe are important in selecting a marriage partner afford one domain for assessing human values. We examined the cultural evolution of these values over more than half a century. Building on existing data on mate preferences collected in 1939 (N= 628 ), 1956 (N= 120 ), 1967 (N= 566 ), and 1977 (N= 316 ), we collected data using the same instrument in 1984/1985 (N= 1,496 ) and in 1996 (N= 607 ) at geographically diverse locations. Several changes in values were documented across the 57‐year span. Both sexes increased the importance they attach to physical attractiveness in a mate. Both sexes, but especially men, increased the importance they attach to mates with good financial prospects. Domestic skills in a partner plummeted in importance for men. Mutual attraction and love climbed in importance for both sexes. The sexes converged in the ordering of the importance of different mate qualities, showing maximum similarity in 1996. Discussion speculates about causes of the cultural evolution of values.     

Discrimination in mortgage lending: The Home Mortgage Disclosure Act

There exists a long history of legislation at the national and state levels in the United States designed to have an impact on the home mortgage lending market. The present research makes use of data available through one national legislative act, the Home Mortgage Disclosure Act, to ascertain if some census tracts in Memphis, Tennessee are experiencing lower than expected rates of mortgage lending from conventional and governmental sources due to the percent of their population which is black. The data indicate that even after instituting objective controls, i.e., income, neighborhood conditions, and two dimensions of demand, the percent of the population which is black significantly affects (negatively) lending rates. These results are discussed in regard to (1) the implications for patterns of city growth and development, and (2) further legislative action required to make the study of such dis-crimination easier for a public charged with that responsibility.     

Endorsement of Criminal Behavior Amongst Offenders: Implications for DSM-5 Gambling Disorder

The fifth edition of the diagnostic and statistical manual (DSM) has changed the scoring threshold for a gambling disorder (GD) from five criteria to four and eliminated the illegal acts criterion. The impact of these changes was examined with data from a correctional population (N = 676) in Ontario, Canada. The offenders completed a self-report survey that included the Canadian problem gambling index, the South Oaks Gambling Screen and the DSM-IV criteria. Changing the threshold from 5 to 4 improved the convergent validity for GD and resulted in an increase in the percentage of offenders diagnosed with a GD from 7.4 to 10.2 %. The results also indicate that the illegal acts criterion contributes to the convergent validity of GD. The evidence supports the change in the threshold from five to four, but also reinforces the importance of examining illegal acts when dealing with an offender population. The incorporation of illegal acts into the “lying to others” criteria appears to make up, to some extent, for the removal of the illegal acts criterion.     

Polarization in Mothers' Employment

Using secondary analysis of large, nationally representative government data sets, we explore the interaction of occupational class and the age of youngest child in mothers' labour force participation. We show that levels of full-time working vary markedly in each occupational class and by age of youngest child. Within part-time working, the principal form of labour force participation for mothers, there are marked class differences in eligibility for ‘short-term’ and ‘long-term’ employment rights, as well as in the ‘quality’ of part-time working. We suggest that the impact on mothers' employment of the age of the youngest child is mediated by mothers' occupational class and conclude that there is growing evidence of polarities in the employment experience of mothers in different occupational classes.     

Borderline personality symptomatology and history of domestic violence among women in an internal medicine setting

In this study of primary care patients, we examined the relationship between a history of domestic violence (measured with the Severity of Violence Against Women Scale [SVAWS]) and borderline personality (measured with the Self-Harm Inventory [SHI] and the Personality Diagnostic Questionnaire-4 [PDQ-4]). We elected borderline personality for examination because several diagnostic criteria sets describe relationship features suggestive of partner abuse. In this study, both measures of borderline personality were highly related to each other (r = .73, p < .001) as well as to the SVAWS (r = .70, p < .001, for the SHI; r = .73, p < .001, for the PDQ-4). Using diagnostic cutoff scores on the measures for borderline personality, 64.0% of those with histories of domestic violence scored in the positive range on either or both measures, while only 11.1% of nonabused women did. We discuss the clinical implications of these findings.