The representation of explicit motor sequence knowledge

Much research has investigated the representation of implicitly learned motor sequences: Do subjects learn sequences of stimuli, responses, response locations, or some combination? Most of the work on this subject indicates that when sequences are learned implicitly, it is in terms of response locations. The present work investigated the representation of explicitly learned motor sequences. In four experiments, we found consistent evidence that explicitly learned sequences are represented in terms of stimulus locations. This conclusion held true for both self-report measures (subjects said that they learned stimuli) and performance measures, but when stimuli changed, performance degraded. We interpret these data in a multiple-memory-systems framework.     

Developing rich and quickly accessed knowledge of an artificial grammar

In contrast to prior research, our results demonstrate that it is possible to acquire rich, highly accurate, and quickly accessed knowledge of an artificial grammar. Across two experiments, we trained participants by using a string-edit task and highlighting relatively low-level (letters), medium-level (chunks), or high-level (structural; i.e., grammar diagram) information to increase the efficiency of grammar acquisition. In both experiments, participants who had structural information available during training generated more highly accurate strings during a cued generation test than did those in other conditions, with equivalent speed. Experiment 2 revealed that structural information enhanced acquisition only when relevant features were highlighted during the task using animation. We suggest that two critical components for producing enhanced performance from provided model-based knowledge involve (1) using the model to acquire experience-based knowledge, rather than using a representation of the model to generate responses, and (2) receiving that knowledge precisely when it is needed during training.     

Social class transitions: Three guiding questions for moving the study of class to a dynamic perspective

We argue that social psychological theories of social class should move toward a more dynamic view that considers class change experiences to supplement more static perspectives focused on backgrounds or current positions. Indeed, social class is a unique demographic form of hierarchy because of its dynamism: social class is relatively malleable compared to race and gender; it can change multiple times in one's lifespan; and unlike age, it is something individuals can strive to change and that they often believe is possible to change. We review work from a variety of fields, including sociology, psychology, and organizational behavior, that begins to tackle the question of social class change experiences. Drawing on theories of social class transitions, acculturation, and identity change, we present an organizing framework suggesting three objective, structural features of social class change that should inform individuals' experience of changing class: What direction am I going (resource expectations)? How did I get here (predictability)? Where should I be (social comparisons)? We review emerging work as well as gaps in existing theory and suggest avenues for future research.     

The Impact of Comprehensive Community Initiatives on Population-Level Child,Youth, and Family Outcomes: A Systematic Review

Comprehensive community initiatives (CCIs) represent a popular method for creating systemic change, yet there is a dearth of evidence on their effectiveness (Zaff, Pufall Jones, Donlan, Lin, & Anderson, 2016). This article presents a systematic review of the evidence on the population-level impact of CCIs, focusing specifically on documented effects from studies using an experimental or quasi-experimental design. Of 1,947 articles identified through a database and hand search, 25 articles examining six different CCIs—most of which employed prevention science frameworks—met the review inclusion criteria. The results of this review show that CCIs can strengthen protective factors and reduce risk factors, delay initiation of and reduce substance use, and reduce the likelihood of, and delay engagement in, violent and/or delinquent behaviors. Impacts have been documented as soon as one year after initial intervention, and as early as 7^th grade, with effects sustained as long as seven years post-intervention, and as late as a year post-high school. However, relative to the prevalence of CCIs as a practical intervention, the evidence base is small, potentially dated, and focused on a narrow set of outcomes and populations. Recommendations for interpreting the evidence base are discussed, including methodological limitations and implications for future work.     

Women with diarrhoea-predominant irritable bowel syndrome show an increased pressure response to 35% carbon dioxide stress challenge

The responses to inhalation of 35% carbon dioxide (CO(2)) as a stressor were compared in female irritable bowel syndrome (IBS) patients and healthy controls to assess potential differences in cardiovascular, neuroendocrine and behavioural responses to stress. A total of 22 women (12 patients with ROME II defined diarrhoea-predominant IBS and 10 aged-matched controls) were challenged with a single vital capacity breath of 35% CO(2) (with 65% oxygen). Beat-to-beat blood pressure and heart rate were recorded prior to, during and after the inhalation. Serum cortisol concentration and behavioural ratings were measured pre- and post-inhalation. A typical pattern of responses to CO(2) was observed, characterised by a reduction in heart rate and increases in serum cortisol and anxiogenic symptoms; however, these responses did not differ between groups. Both groups also demonstrated an increase in systolic blood pressure; however, this response was significantly enhanced in IBS patients compared to healthy controls (P < 0.05). These findings demonstrate that females with diarrhoea-predominant IBS have an exaggerated pressor response to 35% CO(2) stress challenge, suggesting a more stress-responsive sympathetic nervous system.     

Not all group hypnotic suggestibility scales are created equal: individual differences in behavioral and subjective responses

To examine the influence of hypnotic suggestibility testing as a source of individual differences in hypnotic responsiveness, we compared behavioral and subjective responses on three scales of hypnotic suggestibility: The Harvard Group Scale of Hypnotic Susceptibility, Form A (HGSHS: A; Shor, R. E., Orne, E. C. (1962). Harvard Group Scale of Hypnotic Susceptibility. Berlin: Consulting Psychologists Press); the Carleton University Responsiveness to Suggestion Scale (CURSS; Spanos, N. P., Radtke, H. L., Hodgins, D. C., Stam, H. J., Bertrand, L. D. (1983b). The Carleton University Responsiveness to Suggestion Scale: Normative data and psychometric properties. Psychological Reports, 53, 523-535); and the Group Scale of Hypnotic Ability (GSHA; Hawkins, R., Wenzel, L. (1999). The Group Scale of Hypnotic Ability and response booklet. Australian Journal of Clinical and Experimental Hypnosis, 27, 20-31). Behavioral and subjective responses to the CURSS were significantly different than those on the HGSHS: A and GSHA. More participants were classified as "low suggestible" on the CURSS and they reported subjective experiences more similar to everyday mentation. Attitudes and expectancies of participants who received the GSHA were less predictive of responding, but rates of responding and subjective experiences were similar on the GSHA and the HGSHS: A. Discussion focuses on implications for the use of group hypnotic suggestibility scales.     

Man Smart,Woman Smarter? Getting to the Root of Gender Differences in Self‐handicapping

Research in self-handicapping has consistently demonstrated a robust yet puzzling gender difference in the use of behavioral self-handicaps. Women not only are less likely to use behavioral self-handicaps when such opportunities present themselves, but are also more punitive in their evaluations of others who utilize these types of handicaps. For years, the literature has considered several possible explanations for these consistent gender differences, with little success. The present work highlights our recent efforts suggesting that the personal value placed on effort, as indexed by the 'Worker scale' ( McCrea, Hirt, Hendrix, Milner, & Steele, 2008 ), is an important mediator of these gender differences in both the use of and evaluation of others' use of behavioral self-handicaps. Discussion centers on the implications of the present results for gaining a better understanding of the motivations and tradeoffs that underlie the use of this self-defeating strategy.     

Spatial representations elicit dual-coding effects in mental imagery

Spatial aspects of words are associated with their canonical locations in the real world. Yet little research has tested whether spatial associations denoted in language comprehension generalize to their corresponding images. We directly tested the spatial aspects of mental imagery in picture and word processing (Experiment 1). We also tested whether spatial representations of motion words produce similar perceptual-interference effects as demonstrated by object words (Experiment 2). Findings revealed that words denoting an upward spatial location produced slower responses to targets appearing at the top of the display, whereas words denoting a downward spatial location produced slower responses to targets appearing at the bottom of the display. Perceptual-interference effects did not obtain for pictures or for words lacking a spatial relation. These findings provide greater empirical support for the perceptual-symbols system theory ( Barsalou, 1999, 2008 ).     

Unstable Embodiments: A Phenomenological Interpretation of Patient Satisfaction with Treatment Outcome

Many patients experience aspects of treatment and care as dehumanizing because the body is considered separate from the self and its life context. An attempt to transcend viewing persons in dualistic terms is posed by phenomenologists who focus not on "the body" as such but on what it means to be "embodied." In this paper, we review the relevance of the phenomenology of the body for health care and report the results of comparing Sally Gadow's phenomenological insights about body-self unity with a qualitative analysis of patients' accounts of satisfaction with the outcome of hand surgery. We illustrate the ways in which our findings were and were not congruent with Gadow's conceptualization of embodiment and highlight aspects that are ambiguous. We conclude that the body-self dialectical relationship should be recast as a body-self-society trialectic and discuss the implications of this new conceptualization for clinical practices.