Latina Mothers’ Involvement in an HIV/STI and Substance Use Prevention Program for Adolescents: A Parallel Intervention Curriculum

As part of a larger HIV/STI/Substance Abuse Prevention intervention targeted to middle school students, we offered students’ parents an opportunity to participate in an adult education class. The same curricular materials were used for students enrolled in the intervention and for their parents. In the current study, mothers who had completed the adult education class participated in a focus group. The focus group explored what components of the intervention were perceived by mothers as particularly useful to them or to their child. Three core themes emerged from interpretive analyses of the focus group: (1) positive relationships with intervention staff and school personnel enticed students to participate in the intervention and facilitated parents’ involvement; (2) both students and parents felt respected and empowered by the intervention’s cornerstone values and curricular philosophy of cultural richness and pride in Hispanic/Latino heritage; and (3) mothers perceived their mastery of the course content—materially wholly dedicated to the health and wellness of their children—benefitted them in terms of both understanding the material and potentially allowing mothers to discuss health-oriented behavior with their young adolescent child.     

On the importance of avoiding shortcuts in applying cognitive models to hierarchical data

Psychological experiments often yield data that are hierarchically structured. A number of popular shortcut strategies in cognitive modeling do not properly accommodate this structure and can result in biased conclusions. To gauge the severity of these biases, we conducted a simulation study for a two-group experiment. We first considered a modeling strategy that ignores the hierarchical data structure. In line with theoretical results, our simulations showed that Bayesian and frequentist methods that rely on this strategy are biased towards the null hypothesis. Secondly, we considered a modeling strategy that takes a two-step approach by first obtaining participant-level estimates from a hierarchical cognitive model and subsequently using these estimates in a follow-up statistical test. Methods that rely on this strategy are biased towards the alternative hypothesis. Only hierarchical models of the multilevel data lead to correct conclusions. Our results are particularly relevant for the use of hierarchical Bayesian parameter estimates in cognitive modeling.     

The cyber dating violence inventory. Validation of a new scale for online perpetration and victimization among dating partners

Cyber dating abuse is a new kind of dating violence. Several recent measures assess this phenomenon, but do not focus on a severe aggression that aims to spoil a partner’s relational network (relational cyber abuse). This study developed and validated the Cyber Dating Violence Inventory (CDVI) with 1405 adolescents and young adults (M_age = 18.17; SD_age = 2.39; 65.1% females), an instrument that considers the relational dimension of online dating abuse. Exploratory and confirmatory factor analyses found two correlated factors (Psychological and Relational) for both perpetration and victimization, showing good reliability. CDVI factors were positively correlated with offline dating violence, showing good criterion validity. This instrument has clinical and educational implications.     

Reactions to gay men: Contact and overcorrection in an employee selection simulation

The current study examines the role of contact on reactions to gay and heterosexual targets by U.S. heterosexual college students. Aversive bias research finds that minority group members receive unfavorable evaluations only when non-category-based information justifies bias. We argue that under other conditions, namely absence of conditions justifying bias, minority group members receive more favorable evaluations than non-minorities, an effect we term overcorrection. We apply this research to the study of attitudes toward gay men. The current study examines this effect on evaluations of a highly qualified male job candidate who is either gay or heterosexual and flawed or not flawed. We predicted and found, among 180 college students, that the overcorrection effect was present only for those individuals who have experienced no friendships with gay men. Those individuals who do have gay male friends did not exhibit overcorrection. We interpret this result as an indication that individuals who have gay friends (contact) ignore category information such as gay/ heterosexual and are more likely to exhibit truly egalitarian ratings. Implications for aversive bias and outgroup covariation perspectives are discussed. We presented portions of this paper at the 2000 Western Psychological Association conference, Maui, HI.     

Universal sex differences in the desire for sexual variety: tests from 52 nations, 6 continents,and 13 islands

Evolutionary psychologists have hypothesized that men and women possess both long-term and short-term mating strategies, with men's short-term strategy differentially rooted in the desire for sexual variety. In this article, findings from a cross-cultural survey of 16,288 people across 10 major world regions (including North America, South America, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, South/Southeast Asia, and East Asia) demonstrate that sex differences in the desire for sexual variety are culturally universal throughout these world regions. Sex differences were evident regardless of whether mean, median, distributional, or categorical indexes of sexual differentiation were evaluated. Sex differences were evident regardless of the measures used to evaluate them. Among contemporary theories of human mating, pluralistic approaches that hypothesize sex differences in the evolved design of short-term mating provide the most compelling account of these robust empirical findings.     

Age,skill, and contextual cuing in target detection

This study examined the extent to which structural regularities inherent in visual arrays help to guide target detection and reduce age-related differences in skilled visual search performance. The target-detection performance of medical laboratory technologists in 2 age groups (M = 24.3 years and M = 49.0 years) and age-matched novices was assessed using images of bacterial morphology taken from Gram's stain photomicrographs as targets and search arrays. For skilled observers, response times were longer for middle-aged adults than for young adults except when external location cues were available, or when contextual cues inherent in the array were available to guide target detection. These results demonstrate that contextual information aids the skilled search of middle-aged experts, and suggest that contextual cuing is 1 means by which middle-aged adults can circumvent the effects of normally age-deficient processes on performance in a skilled domain.     

Use of numerical symbols by the chimpanzee (Pan troglodytes): Cardinals, ordinals, and the introduction of zero

An adult female chimpanzee with previous training in the use of Arabic numerals 1–9 was introduced to the meaning of "zero" in the context of three different numerical tasks. The first two were cardinal tasks where the subject was required either to select numerals corresponding to the number of items presented on a computer screen (productive use of numerals) or to match sets of the appropriate size to numerals presented as samples (receptive use). The third task addressed the ordinal meaning of the same symbols where the subject was required to respond to numerals sequentially, arranging them into an ascending series. The subject mastered the recognition of the meaning of zero in all three tasks. However, details of her usage of the symbol revealed that transfer of the meaning between different kinds of tasks was incomplete, suggesting that the level of abstraction characteristic of human numerical ability was not attained in the chimpanzee. Over the course of acquisition leading to the high levels of accuracy eventually observed, the newly introduced zero appeared to shift along the length of a continuous numerical scale toward the lower end, while confusions with 1 remained the most frequently encountered mistakes. Such patterns of error thus suggest that Ai's understanding of the meaning of zero in relation to the rest of the number symbols was not consistent with an "absence of items versus presence of items" scheme. Electronic Publication     

On the relation between the acquisition of singular-plural morpho-syntax and the conceptual distinction between one and more than one

We investigated the relationship between the acquisition of singular-plural morpho-syntax and children's representation of the distinction between singular and plural sets. Experiment 1 tested 18-month-olds using the manual-search paradigm and found that, like 14-month-olds (Feigenson & Carey, 2005), they distinguished three objects from one but not four objects from one. Thus, they failed to represent four objects as 'plural' or 'more than one'. Experiment 2 found that children continued to fail at the 1 vs. 4 manual-search task at 20 months of age, even when told, via explicit morpho-syntactic singular-plural cues, that one or many balls are being hidden. However, 22- and 24-month-olds succeeded both with and without verbal cues. Parental report data indicated that most 22- and 24-month-olds, but few 20-month-olds, had begun producing plural nouns in their speech. Also, the success among the older children was due to those children who had reportedly begun producing plural nouns. We discuss a possible role for language acquisition in children's deployment of set-based quantification and the distinction between singular and plural sets.     

Patients are not fully human: a nurse's coping response to stress

In this article, dehumanization of patients was studied as a strategy used by nurses to cope with stress. Affective organizational commitment (AOC) and affective commitment to patients (ACP) were tested as moderators. We also explored how nurses' humanity attributions to their in‐group relate to stress symptoms. Participants were nurses working in different wards of an Italian urban hospital. Findings showed that perceiving patients as not fully human was related to lower levels of stress symptoms for nurses with high AOC and ACP, but not for nurses with low AOC and ACP. Moreover, for highly committed nurses, the attribution of uniquely human traits to the in‐group was associated with increased stress symptoms. Implications of findings for the relationship between nurses and patients are discussed.     

The Arena System: a novel shared touch-panel apparatus for the study of chimpanzee social interaction and cognition

We report on the development of a novel shared touch-panel apparatus for examining a diverse range of topics in great ape social cognition and interaction. Our apparatus—named the Arena System—is composed of a single multitouch monitor that spans across two separate testing booths, so that individuals situated in each booth have tactile access to half of the monitor and visual access to the whole monitor. Additional components of the system include a smart-film barrier able to restrict visual access between the booths, as well as two automated feeding devices that dispense food rewards to the subjects. The touch-panel, smart-film, and feeders are controlled by a PC that is also responsible for running the experimental tasks. We present data from a pilot behavioral game theory study with two chimpanzees in order to illustrate the efficacy of our method, and we suggest applications for a range of topics including animal social learning, coordination, and behavioral economics. The system enables fully automated experimental procedures, which means that no human participation is needed to run the tasks. The novel use of a touch-panel in a social setting allows for a finer degree of data resolution than do the traditional experimental apparatuses used in prior studies on great ape social interaction.