A Developmental Perspective on Processing Semantic Context: Preliminary Evidence from Sentential Auditory Word Repetition in School-Aged Children

Journal of Psycholinguistic Research - The current investigation examined the developmental changes involved in processing semantic context in auditorily presented sentences, as well as underlying...     

Interventions to Promote Sun Protection Behaviors: What Do We Know About the Efficacy of Health‐ and Appearance‐based Messages and the Role of Cognitions and Emotions?

Human behavior has been implicated as a critical component in the development of a number of diseases, including skin cancer. More than 85% of all skin cancers are attributed to over‐exposure to the sun, and two primary types of interventions have been utilized to motivate sun protection practices – those that focus on the health consequences (i.e., skin cancer) and those that highlight the negative appearance consequences (i.e., wrinkles and age spots) of sun exposure. Both health‐based and appearance‐based interventions have been demonstrated to increase awareness of sun exposure dangers and of recommended risk reduction behaviors. Much of the literature examining the efficacy of appearance‐based interventions also contains evidence of behavior change in response to such interventions. The role of consciously accessible attitudes and perceptions as mechanisms of behavior change has been extensively examined, and there is evidence that sun protection interventions may promote behavior change in part by altering various health‐related cognitions (e.g., perceived susceptibility to skin damage). However, the role of nonconscious mechanisms in the efficacy of sun protection interventions has received little empirical attention. A growing body of literature, primarily in other health contexts, has demonstrated that behavior is sometimes more strongly predicted by emotions than cognitions, and that processes outside of conscious awareness may affect behavior change. It is suggested that both future sun protection interventions, and health promotion theories in general, could benefit from a thorough examination of the role that emotions and autonomic reactions may play in intervention efficacy.     

The poehlman case: running away from the truth

Eric T. Poehlman, Ph.D., was an internationally recognized, tenured professor at the University of Vermont (UVM) in Burlington when, in October 2000, a junior member of Poehlman’s laboratory became convinced that he had altered data from a study on aging volunteers from the Burlington area. This suspicion developed into one of the most significant cases of scientific misconduct in the history of the US Department of Health and Human Services’ (HHS) Office of Research Integrity (ORI), launching a US Department of Justice (DOJ) civil and criminal fraud investigation and, eventually, to a much publicized guilty plea and felony conviction. In the end, Dr. Poehlman admitted to 54 findings of scientific misconduct made by the UVM and ORI, agreed to retract or correct ten of his publications and to exclude himself from federal procurement and nonprocurement transactions for life. The United States Government’s handling of this case was distinguished by a highly cooperative approach that integrated the resources of the US Attorney’s Office for the District of Vermont (USAO) and both ORI and the Office of the Inspector General (OIG) in HHS in the common goal of prosecuting research fraud. The content of this article represents the personal views of the authors and does not express the opinion or policy of DHHS or its components. A paper on this topic was presented at the 6th International Bioethics Conference on the subject of ‘The Responsible Conduct of Basic and Clinical Research’, held in Warsaw, Poland, 3–4 June 2005.     

Analogue Mental Transformations in 3‐Year‐Olds: Introducing a New Mental Rotation Paradigm Suitable for Young Children

Until now, a successful application of the mental rotation paradigm was restricted to children 5 years or older. By contrast, recent findings suggest that even infants can perform mental rotation. Unlike the methods used in infant studies (looking time), our new research paradigm allows for the measurement and interpretation of reaction times. Kindergartners (aged 3–6 years) were presented with a stimulus configuration on a touchscreen and asked to bring a rotated stimulus into an upright position using the shortest path. Mean reaction time (RT) increased linearly with angular disparity. The ensuing linear trend was significant not only for the entire sample but also for the youngest age group analysed separately. To exclude the possibility that linearity was due to movement planning, 3‐year‐olds had to manually rotate a stimulus about the same trajectory without the need for a corresponding mental transformation in a second experiment. Here, no linear trend was observed. These results are interpreted as evidence for an analogue mental transformation in 3‐year‐olds, equal to the transformation processes in older children's and adults' mental rotation. Copyright © 2013 John Wiley & Sons, Ltd.     

Psychophysical saturation scales and the spectral sensitivity in human vision

Summary For mixtures of white and colored lights, the intensity of the colored light necessary to produce a linear psychophysical saturation curve is determined. This intensity may be defined as equilibrium between chromatic and achromatic excitation. From a measurement of the equilibrium throughout the spectrum, a spectral sensitivity function may be derived. According to the hypothesis of Börsken and Hemminger (1980), this function describes the spectral sensitivity of the achromatic channel in human color vision.     

Effects of Media Images on Attitudes Toward Tanning

Two experiments evaluated the effects of exposure to pictures of suntanned and untanned fashion models on attitudes regarding the importance of having a tan. In Experiment 1, 128 women were randomly assigned to view images of photographer's models that had been digitally altered to make it appear that the model either did or did not have a tan. Participants who viewed images of the models without a tan expressed significantly less positive attitudes toward tanning than did those who viewed the same models with a tan. In Experiment 2, 169 women were randomly assigned to view advertisements taken from fashion and beauty magazines that contained models who appeared to have suntanned skin, models who appeared not to have a tan, or no models at all. The results demonstrated that participants who viewed ads depicting models with untanned skin expressed less favorable attitudes toward tanning than did those who viewed control ads or those who viewed tan models. Given escalating skincancer rates, it is important to examine the role that media exposure may play in promoting risky behaviors.