The effect of in-vehicle warning systems on speed compliance in work zones

The purpose of this research was to evaluate the effectiveness of augmented in-vehicle speed warnings on driver behavior in work zones. The influence of three device configurations were examined as the drivers entered a work zone which was presented in a simulated driving environment. The first configuration was a control condition which used only traditional signage. The second condition had the addition of a visual in-vehicle warning while the final condition had the addition of an auditory in-vehicle warning. Results indicated that adding in-vehicle warnings did affect driver compliance to the work zone speed limit. Participants in the audio warning condition responded more quickly to the warning than those in the visual condition. Both augmented warning configurations differed significantly and were each respectively different from the drivers in the control condition. Based on these results we suggest a combination of in-vehicle warnings. Upon entry of the work zone we suggest a combined audio and visual warning message. However, after the initial entry phase, a visual warning message shows greater promise for the on-going modulation of driver speed transit.     

Enhanced change detection performance reveals improved strategy use in avid action video game players

Recent research has shown that avid action video game players (VGPs) outperform non-video game players (NVGPs) on a variety of attentional and perceptual tasks. However, it remains unknown exactly why and how such differences arise; while some prior research has demonstrated that VGPs' improvements stem from enhanced basic perceptual processes, other work indicates that they can stem from enhanced attentional control. The current experiment used a change-detection task to explore whether top-down strategies can contribute to VGPs' improved abilities. Participants viewed alternating presentations of an image and a modified version of the image and were tasked with detecting and localizing the changed element. Consistent with prior claims of enhanced perceptual abilities, VGPs were able to detect the changes while requiring less exposure to the change than NVGPs. Further analyses revealed this improved change detection performance may result from altered strategy use; VGPs employed broader search patterns when scanning scenes for potential changes. These results complement prior demonstrations of VGPs' enhanced bottom-up perceptual benefits by providing new evidence of VGPs' potentially enhanced top-down strategic benefits.     

A bayesian optimal foraging model of human visual search

Real-world visual searches often contain a variable and unknown number of targets. Such searches present difficult metacognitive challenges, as searchers must decide when to stop looking for additional targets, which results in high miss rates in multiple-target searches. In the study reported here, we quantified human strategies in multiple-target search via an ecological optimal foraging model and investigated whether searchers adapt their strategies to complex target-distribution statistics. Separate groups of individuals searched displays with the number of targets per trial sampled from different geometric distributions but with the same overall target prevalence. As predicted by optimal foraging theory, results showed that individuals searched longer when they expected more targets to be present and adjusted their expectations on-line during each search by taking into account the higher-order, across-trial target distributions. However, compared with modeled ideal observers, participants systematically responded as if the target distribution were more uniform than it was, which suggests that training could improve multiple-target search performance.     

Visual laterality in belugas (Delphinapterus leucas) and Pacific white-sided dolphins (Lagenorhynchus obliquidens) when viewing familiar and unfamiliar humans

Lateralization of cognitive processes and motor functions has been demonstrated in a number of species, including humans, elephants, and cetaceans. For example, bottlenose dolphins (Tursiops truncatus) have exhibited preferential eye use during a variety of cognitive tasks. The present study investigated the possibility of visual lateralization in 12 belugas (Delphinapterus leucas) and six Pacific white-sided dolphins (Lagenorhynchus obliquidens) located at two separate marine mammal facilities. During free swim periods, the belugas and Pacific white-sided dolphins were presented a familiar human, an unfamiliar human, or no human during 10–15 min sessions. Session videos were coded for gaze duration, eye presentation at approach, and eye preference while viewing each stimulus. Although we did not find any clear group level lateralization, we found individual left eye lateralized preferences related to social stimuli for most belugas and some Pacific white-sided dolphins. Differences in gaze durations were also observed. The majority of individual belugas had longer gaze durations for unfamiliar rather than familiar stimuli. These results suggest that lateralization occurs during visual processing of human stimuli in belugas and Pacific white-sided dolphins and that these species can distinguish between familiar and unfamiliar humans.     

Facial Feature Assessment of Popular U.S. Country Music Singers Across Social and Economic Conditions

The facial features of the artists of the top Country Billboard song for each year from 1946 to 2010 were investigated across changes in U.S. socioeconomic conditions. When conditions were relatively poor, country music artists with more mature facial features of smaller eyes and larger chins were popular, and when conditions were more prosperous, country music artists with more baby-faced features of larger eyes and smaller chins were popular. Results extend previous findings with pop singers, movie actresses, and Playboy Playmates, and suggest the social and economic environment influences preferences for country singers across time.     

Evaluating the use of preparation guides in interteaching versus a quiz alternative

Interteaching is a behavioral teaching method that has demonstrated efficacy in higher education. Of particular interest is the use of a preparation guide (a guided reading assignment), which is designed to promote engagement in the other areas of the interteaching process. The present study compared the use of a preparation guide completed before the start of class with that of a quiz administered at the start of the class. The quiz was hypothesized to serve as a functional alternative to the preparation guide. A total of 38 undergraduate students enrolled in an Introduction to Psychology course participated in this study. The primary dependent measure was student performance on tests following each condition. The analysis revealed no statistically significant difference between the conditions, F(1, 302) = 0.103, p = .748, though qualitative feedback revealed student preference for preparation guides. Future research is necessary to examine the effects of quizzing while addressing the limitations of this study.     

Athletes’ Preferred Characteristics and Qualifications of Sport Psychology Practitioners: A Consumer Market Analysis

Studies assessing the perceived characteristics of competent sport psychology practitioners have resulted in skewed data, making it difficult to discern the relative importance of each characteristic. Therefore, the purpose of this study was to assess the attributes of gender, ethnicity, interpersonal skills, physical appearance, athletic background, professional status, and sport culture in relation to one another using conjoint analysis, a consumer market analysis. College student athletes (N = 464) indicated a preference for a female practitioner whose ethnicity matched that of the athlete and possessed high interpersonal skills and sport knowledge, an athletic background, a physically fit body type, and had earned a professional degree. These findings can be used by sport psychology consultants to modify the information they give to current clients and to develop marketing plans to appeal to potential clients.     

from the common thug to the local businessman: an exploration into an urban african american barbershop

This ethnographic study investigates the social interactions that transpire in an urban African American barbershop, called Peanut's, located in a Southern city. The results of this study indicate that the urban African American barbershop has the potential to be a place where any number of activities can and do take place. Specifically, this study discovered three levels of the underground economy (i.e., legal, quasi-legal, and illegal) with each level reflecting a different degree of criminal potential.     

An enhanced examination of Holland's consistency and differentiation hypotheses

The research support for Holland's concepts of consistency and differentiation has been equivocal (Nauta, 2010). To provide a reexamination of these concepts, a new method of operationalizing Holland's constructs of consistency and differentiation using the cosine fit function to the RIASEC score profile is proposed. The relation of these new indices to career certainty, congruence and the moderation of the congruence–certainty relation were examined in a sample of 118 college students (study 1). Support was found for the superiority of the cosine fit definitions of consistency and differentiation over the traditional representations. The cosine fit indices were further examined in a second study on 167 adults examining interest stability over 15 years. The cosine fit indices of consistency and differentiation were related to both occupational stability over 15 years and career satisfaction. The results suggest that the concepts of differentiation and consistency may still have merit but only with more exact methods of specification.