Detecting Treatment Effects with Small Samples: The Power of Some Tests Under the Randomization Model

Randomization tests are often recommended when parametric assumptions may be violated because they require no distributional or random sampling assumptions in order to be valid. In addition to being exact, a randomization test may also be more powerful than its parametric counterpart. This was demonstrated in a simulation study which examined the conditional power of three nondirectional tests: the randomization t test, the Wilcoxon–Mann–Whitney (WMW) test, and the parametric t test. When the treatment effect was skewed, with degree of skewness correlated with the size of the effect, the randomization t test was systematically more powerful than the parametric t test. The relative power of the WMW test under the skewed treatment effect condition depended on the sample size ratio.     

Developing a Prevention Synthesis and Translation System to Promote Science‐Based Approaches to Teen Pregnancy,HIV and STI Prevention

The Interactive Systems Framework for Dissemination and Implementation (ISF) is a multi‐system framework that can guide research‐to‐practice efforts by building and supporting the work of three interacting systems: the Prevention Delivery, Support, and Synthesis and Translation Systems. The Synthesis and Translation system is vital to bridging science and practice, yet how to develop it and train support system partners to use it is under‐researched. This article bridges this gap by offering a case example of the planning, development, and use of a synthesis and translation product called Promoting Science‐based Approaches to Teen Pregnancy Prevention using Getting To Outcomes. The case presented documents the process used for developing the synthesis and translation product, reports on efforts to engage the Prevention Support system to use the product, and how we approached building interaction between the Synthesis and Translation System and the Support System partners. Practice‐oriented evaluation data are also presented. Implications for practice, policy and research are discussed. Special Issue: Advances in Bridging Research and Practice Using the Interactive System Framework for Dissemination and Implementation; Guest Editors: Abraham Wandersman, Paul Flaspohler, Catherine A. Lesesne, Richard Puddy; Action Editor: Emilie Phillips Smith     

Navigating the Road Ahead: Public Health Challenges and the Interactive Systems Framework for Dissemination and Implementation

Public health is currently faced with an array of critical challenges and disconnects. Research and evaluation have identified a number of evidence‐based strategies for effecting behavior change at individual, group, organizational, and environmental levels, all of which hold promise for leading to substantial reductions in morbidity and mortality, and increased quality of life. Unfortunately, there is huge variability across the public health system in awareness of the value of using evidence to inform decision making, let alone in capacity to locate, assess, compare, select, justify, adapt, implement, and evaluate evidence‐based strategies, or to participate in building the evidence base for practice‐based innovations. As a result, many communities may not be benefitting from research‐tested and practice‐based strategies that could help them to meet their public health goals more efficiently and effectively. CDC's Interactive Systems Framework for Dissemination and Implementation (ISF), released in 2008, was designed to help close this gap between research and practice. This commentary identifies the ways in which the ISF framework is useful in addressing the research practice gap; revisits the elements of the framework that have continued to guide research and practice in fruitful ways; and highlights areas that need further development to meet current public health challenges. Special Issue: Advances in Bridging Research and Practice Using the Interactive System Framework for Dissemination and Implementation; Guest Editors: Abraham Wandersman, Paul Flaspohler, Catherine A. Lesesne, Richard Puddy; Action Editor: Emilie Phillips Smith     

Familial and peer modeling and verbal commentary: associations with muscularity-oriented body dissatisfaction and body change behaviors

This study investigated associations between familial and peer modeling of weightlifting and verbal commentary with muscularity-oriented body dissatisfaction and body change behaviors to increase muscularity in men. Participants were 177 male undergraduates who completed self-report questionnaires measuring negative verbal commentary about appearance and encouragement to lift from family and peers, paternal and peer modeling of weightlifting, muscularity-oriented body dissatisfaction and body change behaviors aimed at increasing muscularity. Two hierarchical linear regressions examined the relationships between these social influences and body dissatisfaction and body change behaviors. Both regression models were significant. Peer encouragement to lift and peer negative verbal commentary were significant predictors of body dissatisfaction; paternal and peer modeling and peer encouragement to lift were significant predictors of body change behaviors. These findings confirm the importance of verbal commentary to male body dissatisfaction and also highlight the importance of modeling on men's engagement in body change behaviors to increase muscularity.     

Leisure-Time Physical Activity and Perceived Health in People Living with Osteoporosis

Leisure-time physical activity (LTPA) represents an important factor contributing to the development and management of osteoporosis yet research linking LTPA with perceived health markers has been limited in this cohort. The purpose of this study was to test the relationship between LTPA and perceived health controlling for select demographic factors and chronic conditions in people living with osteoporosis. Population-health survey data from cycle 2.2 of the Canadian Community Health Survey were used in conjunction with linear multiple regression models. Participants were 1538 (n _female = 1371) adults who reported living with osteoporosis. Demographic factors, chronic conditions, and more frequent participation in LTPA accounted for variance in diverse indices representing perceived health. LTPA was the only predictor to account for unique variance in each marker of perceived health. Overall, it would appear that increased use of LTPA as an adjunct to therapeutic interventions may be a viable aid to enhancing self-perceived health amongst Canadians living with osteoporosis.     

Time Flies When You're Having Approach-Motivated Fun: Effects of Motivational Intensity on Time Perception

Time flies when you're having fun, but what is it about pleasant experiences that makes time seem to go by faster? In the experiments reported here, we tested the proposal that approach motivation causes perceptual shortening of time during pleasant experiences. Relative to a neutral state or a positive state with low approach motivation (Experiment 1), a positive state with high approach motivation shortened perceptions of time. Also, individual differences in approach motivation predicted shorter perceptions of time. In Experiment 2, we manipulated approach motivation independently of the affective state and showed that increasing approach motivation caused time to be perceived as passing more quickly. In Experiment 3, we showed that positive approach motivation, as opposed to arousal, shortens perception of time by comparing a highly arousing positive state with a highly arousing negative state. Shortening of time perception in appetitive states may prolong approach-motivated behavior and increase the likelihood of acquiring appetitive objects or goals.     

The Three‐option Format for Knowledge and Ability Multiple‐choice Tests: A case for why it should be more commonly used in personnel testing

Multiple‐choice (MC) tests are arguably the most widely used testing format in applied settings. In the psychometric and education literatures, research on the optimal number of options for knowledge and ability MC tests has revealed that three‐option tests are psychometrically equivalent and, in some cases, superior to five‐option tests. In addition, there are a number of practical, economic, and administrative advantages associated with the use of three‐option MC tests. Yet, despite its advantages, the three‐option format is underutilized in personnel selection. Across two studies, we compared test‐taker perceptions, criterion‐related validity, and sex‐based subgroup differences, and in Study 1, we compared race‐based subgroup differences on three‐ and five‐option tests. Participants in the two studies completed a three‐ or five‐option version of ACT. Test perceptions, criterion‐related validity, and race‐ and sex‐based subgroup differences were similar across test formats. The implications for the expanded use of three‐option tests in applied settings and future directions for research are discussed.     

Health-protective effects of attachment among African American girls in psychiatric care

African American girls in psychiatric care are at increased risk for HIV and sexually transmitted infection (STI) through sexual risk taking. Adolescent sexual behavior often reflects peer norms and behavior. Secure attachment patterns with mothers and peers might lessen the effects of negative peer influences and reduce sexual risk taking among African American girls. This study examined the relationships among mother-daughter and peer attachment, peer norms, and sexual-risk behaviors in African American girls seeking outpatient psychiatric care. A group of 12-16-year-old African American girls (N = 262; M age = 14.45 years) reported on their attachment to their mothers and peers, peer risk-taking and dating behaviors, peer pressure, and sexual-risk behaviors (e.g., number of partners, high-risk partners, and condom use). Structural equation modeling examined whether peer attachment and peer norms mediated the relationship between mother attachment and sexual risk. Findings supported peer norms, but not peer attachment, as a mediator of mother attachment and girls' sexual-risk behaviors. Findings revealed important family and peer factors for African American girls in psychiatric care. HIV prevention programs may be strengthened by improving mother-daughter relationships, addressing the importance of peer relationships, and emphasizing how secure mother-daughter relationships can temper the impact of peer norms.     

Tuning in to Kids: an effectiveness trial of a parenting program targeting emotion socialization of preschoolers

This article reports on an effectiveness trial of the Tuning in to Kids (TIK) parenting program. TIK aims to improve emotion socialization practices in parents of preschool children; it is a universal prevention program that teaches parents the skills of emotion coaching and also targets parents' own emotion awareness and regulation. The present study followed a 2 × 2 (Treatment Condition × Time) design. One hundred twenty-eight parents of children ages 4.0-5.11 years were recruited from preschools and randomized into intervention and waitlist conditions. Parents in the intervention condition (n = 62) attended a six-session group parenting program delivered by community practitioners who followed intervention fidelity protocols. Parents and preschool teachers completed questionnaires twice during the preschool year: at preintervention and at follow-up (approximately 7 months later). Parents reported on their emotion socialization beliefs and practices, other parenting practices, and on child behavior. Teachers reported on child behavior (Social Competence and Anger-Aggression). Data were analyzed using multilevel modeling. At follow-up, compared to the control group, intervention parents were significantly less emotionally dismissive in their beliefs, less dismissive and more coaching in their practices in response to children's negative emotions, and more positively involved. Although there were improvements in both conditions over time for parent-reported child behavior and teacher-reported social competence, compared to the waitlist group, intervention parents reported a significantly greater reduction in number of behavior problems. This trial demonstrates the potential for community agencies and practitioners in real-world settings to deliver a new parenting program that targets emotional communication in parent-child relationships.     

The relationship between skin tone dissatisfaction and sun tanning behaviour

Understanding the factors that contribute to sun exposure is vital for skin cancer prevention. The present study aimed to examine the utility of a new measure for cancer prevention research, the Skin Tone Rating Scale. Australian undergraduate women (N = 156) completed an online questionnaire measuring skin tone dissatisfaction, peer and media norms surrounding tanning, internalisation of a tanned ideal, appearance reasons for tanning, and self‐reported tanning behaviour. The two‐item Skin Tone Rating Scale provided a short and easy‐to‐administer measure of skin tone dissatisfaction that correlated with self‐reported tanning behaviour. The Skin Tone Rating Scale was also moderately related to appearance reasons for tanning and internalisation of a tanned ideal, demonstrating concurrent validity. Socio‐cultural influences (from peers and media) were positively correlated with skin tone dissatisfaction, and this relationship was partially mediated by internalisation of a tanned ideal. Although more research is needed to establish causation, this study provides an important addition to sun tanning literature; it provides a new measure to predict self‐reported tanning behaviour, the Skin Tone Rating Scale, which highlights the importance of appearance concerns in relation to tanning and sun exposure.