Is Salesperson Attractiveness a Boon or a Bane? The Moderating Role of Perceived Labor Cost‐To‐Price Ratio in Retail Bargaining

This research examines the important but unexamined effects of salesperson attractiveness on consumer bargaining behavior in retail contexts. In line with our theorizing, three studies demonstrate that the effect of salesperson attractiveness on consumer bargaining depends on their general beliefs regarding the impact of labor costs on retail prices. While consumers bargain less with an attractive salesperson when their labor costs‐to‐price (LP) ratio beliefs are relatively low, they bargain harder with an attractive, as opposed to a less attractive, salesperson, when their LP ratio beliefs are relatively high. As well, we provide evidence for the process, based on the salesperson's perceived trustworthiness and consumers' consequent bargaining stance toward her.     

Within-day time-varying associations between motivation and movement-related behaviors in older adults

ObjectivesEmerging evidence suggests both motivation and movement-related behaviors vary within and across days. Yet common data analytic approaches assume static or consistent relationships between motivation and behavior across time. Just as motivation and behavior change across time, so too might associations between motivation and behavior. This study will apply time-varying effect modeling to Ecological Momentary Assessment (EMA) data to examine time of day differences in how motivational constructs predict older adults’ subsequent movement-related behavior over the next 2 h.DesignOlder adults (n = 104) completed a 10-day EMA protocol.MethodParticipants answered up to 6 EMA prompts/day to assess momentary intentions and self-efficacy to stand or move as well as intentions and self-efficacy to limit sedentary time over the next 2 h. Participants wore an activPAL accelerometer continuously to measure time spent being upright (i.e., standing or moving) and time spent sitting.ResultsOn weekdays, intentions and self-efficacy were generally predictive of subsequent behavior in the expected direction over the majority of the day whereas these constructs predicted subsequent behavior in the expected directions over a smaller range of times on weekend days.ConclusionsThis study adds to emerging evidence that associations between motivational constructs and subsequent behavior change over the course of the day, but these time-varying associations may be different depending on the day of week. This work has implications for intervention design and the timing of intervention content delivery in approaches like just-in-time adaptive interventions.     

Predictors of cancer survivors’ response to a community-based exercise program

ObjectiveTo explore the degree to which sociodemographic (i.e., age, sex, ethnicity, weight status, vocational status, marital status), medical (i.e., stage of cancer, treatment status, comorbidity burden), functional (i.e., self-rated health, exercise capacity), cognitive (i.e., exercise self-efficacy beliefs), and behavioural (i.e., program adherence, extra-curricular exercise) factors predicted cancer-related fatigue and quality of life among 224 cancer survivors who participated in the community-based Wellspring Cancer Exercise Program (WCEP).DesignProspective, quasi-experimental single-group repeated measures design.MethodData on predictors and outcomes were collected using self-report and objective measures upon enrollment in the program (week 0), every 10 weeks until program completion (weeks 10, 20, 30), and at 16-weeks follow-up (46 weeks). Data were analyzed using multilevel modeling.ResultsIn general, participants who were working or transitioning to work, rated their health better, and had higher exercise self-efficacy beliefs had lower cancer-related fatigue, and those who rated their health better and had higher exercise self-efficacy beliefs had higher quality of life. Also, there was a significant interaction between time and exercise self-efficacy beliefs for cancer-related fatigue and quality of life such that greater improvements were observed among participants with higher exercise self-efficacy beliefs.ConclusionCancer survivors’ perceptions of their health and their ability to exercise should be fostered to ensure they respond positively to exercise programs in terms of cancer-related fatigue and quality of life.     

Daily relations between social perceptions and physical activity among college women

ObjectivesThere is a need to develop more effective physical activity (PA) promotion programs for college women. Theory and evidence suggest that perceptions of the social environment play a role in college women’s PA, though little is known about how these perceptions are associated with PA at the day level. The goal of this study was to examine relations between changes in college women’s daily social perceptions and objectively assessed PA over seven days.DesignDaily diary method.MethodCollege women (n = 80, M_Age = 20, M_BMI = 23.1 kg/m²) wore Fitbit wristbands and completed daily self-reports of (1) the quantity and perceived intensity of their social interactions (positive/negative), and (2) the occurrence of social comparisons (based on appearance/health/status) for seven days.ResultsMultilevel models showed daily variability in predictors and outcomes (ps < 0.0001), as well as relations between within-person changes in social perceptions and PA. Increases in negative interactions (particularly those with friends) were consistently associated with decreases in daily PA, whereas increases in positive interactions showed limited relations (srs = −0.22-0.34). Days with health comparisons were days with greater PA for women who had stronger overall interest in comparisons, but were days with less PA for women with weaker overall interest (srs = 0.22–0.33). PA did not differ between days with vs. without appearance comparisons.ConclusionsSocial perceptions show meaningful day-to-day variability and relations with college women’s daily PA, and specific associations may be useful for improving tailored interventions for college women.     

Longitudinal relations between psychological distress and moderate-to-vigorous physical activity: A latent change score approach

ObjectivesThe effect of physical inactivity on mental health risk is well established; however, less is known about about how psychological distress might deter participation in physical activity. Guided by advancements in the treatment of longitudinal data, the aim of this study was to examine patterns and predictors of change in moderate-to-vigorous physical activity (MVPA) and psychological distress (e.g., feeling nervous, worthless).Design methodAustralian adults (4944 females, M_age = 34.63 years ±5.34; 4322 males, M_age = 37.51 years ±6.14) provided baseline data as part of the Longitudinal Study of Australian Children (LSAC) and were followed for measurements every two years for 10 years.ResultsLatent change score analyses revealed support for a reciprocal effects model, whereby change in MVPA and psychological distress occurred as a function of individuals’ prior levels of, and/or prior change in these variables.ConclusionsThis investigation is the first to document that changes in MVPA and psychological distress are coupled temporally. Notably, we observed that individuals’ distress levels at a given time point predicted subsequent change on both MVPA and distress; a finding which provides novel and important insight into how adults’ activity levels and psychological distress fluctuate relative to one another.     

Experimental comparison of physical activity self-efficacy measurement: Do vignettes reduce motivational confounding?

ObjectivesSelf-efficacy is one of the most reliable correlates of physical activity, yet a growing body of literature has demonstrated that traditional self-efficacy measures may be flawed because they measure perceived capability and other constructs such as motivation. This study adds to this evidence base by comparing a standard self-efficacy measurement group and two measurement conditions that may provide greater validity: motivation held constant (i.e., adding “If you really wanted to” at the beginning of the item) and vignette (i.e., adding a clarifying vignette before the item). The first objective of this study was to compare these groups regarding self-efficacy scores. The second objective was to examine whether physical activity level (i.e., adhering to physical activity guidelines or not) interacted with measurement condition.DesignRandomized cross-sectional design with three independent groups.MethodParticipants were 444 undergraduate students (M age in years = 21.10, SD = 3.73) who completed an online survey measuring physical activity self-efficacy and behaviour.ResultsThe vignette group had higher self-efficacy scores than the standard and motivation held constant groups. Scores were also higher among those adhering to guidelines and there were no differences between the groups for physically active individuals. Finally, among those not adhering to the guidelines, the vignette group had especially high scores compared to the other groups.ConclusionsThis study demonstrated that reading a vignette prior to completing a self-efficacy item clarifies the meaning of the item thereby improving validity of the measure.     

Muscular fitness,motor competence,and processing speed in preschool children

ABSTRACT

The aim of this study was to examine the relationship between muscular fitness and motor competence and processing speed in preschool children. Eighty-four preschool-aged children were recruited and underwent assessments for muscular fitness (muscular endurance and power), motor competence, and then participated in an auditory oddball task. The findings showed that muscular fitness and motor competence were associated with shorter reaction times after controlling for confounding factors. These findings provide tentative support for a positive association between muscular fitness and motor competence and processing speed in preschool children.

abbreviations:

Reaction time (RT); Institutional Review Board (IRB); Basic Motor Ability Test-Revised (BMAT); Body mass index (BMI); Preschool Children Fitness Programme (PCFP); Intraclass correlation coefficients (ICC); Thinking Creatively in Action and Movement test (TCAM); Inter-stimulus interval (ISI); Insulin-like growth factor 1 (IGF-1); Brain-derived neurotrophic factor (BDNF)     

结构方程模式的发展与应用

结构方程模式(Structural Equation Modeling, SEM)在教育、心理研究中得到非常广泛的应用,但目前还有一些理论和技术上的问题有待于澄清。尤其在国内,许多研究者对这种统计方法不十分了解,因此导致了对该程序的误用以及对结果的错误解释。为此,文章首先对SEM的设计和估计方面的一些问题加以讨论;其次指出SEM在近期的一些发展以及在某些方面的最新应用;最后文章还对SEM的局限性进行了简要评述。     

Stacking of blocks by chimpanzees: developmental processes and physical understanding

The stacking-block task has been used to assess cognitive development in both humans and chimpanzees. The present study reports three aspects of stacking behavior in chimpanzees: spontaneous development, acquisition process following training, and physical understanding assessed through a cylindrical-block task. Over 3 years of longitudinal observation of block manipulation, one of three infant chimpanzees spontaneously started to stack up cubic blocks at the age of 2 years and 7 months. The other two infants began stacking up blocks at 3 years and 1 month, although only after the introduction of training by a human tester who rewarded stacking behavior. Cylindrical blocks were then introduced to assess physical understanding in object-object combinations in three infant (aged 3-4) and three adult chimpanzees. The flat surfaces of cylinders are suitable for stacking, while the rounded surface is not. Block manipulation was described using sequential codes and analyzed focusing on failure, cause, and solution in the task. Three of the six subjects (one infant and two adults) stacked up cylindrical blocks efficiently: frequently changing the cylinders' orientation without contacting the round side to other blocks. Rich experience in stacking cubes may facilitate subjects' stacking of novel, cylindrical shapes from the beginning. The other three subjects were less efficient in stacking cylinders and used variable strategies to achieve the goal. Nevertheless, they began to learn the effective way of stacking over the course of testing, after about 15 sessions (75 trials).     

Childhood physical and sexual abuse and lifetime number of suicide attempts: a persistent and theoretically important relationship

BACKGROUND: Research to date has indicated that childhood abuse is associated with suicide, though little research has examined the unique contribution of specific types of abuse to suicidal behavior. We predict that childhood physical and violent sexual abuse will have a greater effect on suicide attempts than molestation and verbal abuse. METHODS: The National Comorbidity Survey data were used to test these predictions while controlling for a number of psychiatric and psychosocial variables. RESULTS: As expected, childhood physical and violent sexual abuse showed similar effects on lifetime suicide attempts, which were stronger than the effects of molestation and verbal abuse. LIMITATIONS: This was a cross-sectional, retrospective study, so true causality cannot be shown. Some measurement limitations exist. Additionally, effect sizes were small but still significant. CONCLUSIONS: While all forms of childhood abuse are troubling and create risk for future psychopathology and suicidality, the present study indicates that childhood physical and violent sexual abuse should be seen as greater risk factors for future suicide attempts than molestation and verbal abuse.