Bayesian inference for psychology. Part I: Theoretical advantages and practical ramifications

Bayesian parameter estimation and Bayesian hypothesis testing present attractive alternatives to classical inference using confidence intervals and p values. In part I of this series we outline ten prominent advantages of the Bayesian approach. Many of these advantages translate to concrete opportunities for pragmatic researchers. For instance, Bayesian hypothesis testing allows researchers to quantify evidence and monitor its progression as data come in, without needing to know the intention with which the data were collected. We end by countering several objections to Bayesian hypothesis testing. Part II of this series discusses JASP, a free and open source software program that makes it easy to conduct Bayesian estimation and testing for a range of popular statistical scenarios (Wagenmakers et al. this issue).     

Aphemia after a penetrating brain wound: A case study

The speech of a patient with aphemia (pure anarthria) resulting from a penetrating brain wound was studied using linguistic and acoustic observations as well as electromyographic recordings from four labial muscles. The results are discussed in relation to phonetic disintegration's syndrome and apraxia of speech which, respectively, enhance linguistic disorders and motor programming disturbance.     

Balint's Influence on Contemporary Psychoanalytic Theory and Practice

Invited by the Psychoanalytic Psychotherapy Study Center in New York to lecture on my book Michael Balint: Le renouveau de l'Ecole de Budapest, Toulouse, Erès 2000, I first gave my personal and analytic motivations for writing this book. Then I stressed Balint's original contributions to analytical theory and practice: the object relation combined with the theory of instinct, the development of the infant, adolescent and even of old age, the basic fault, archaic defenses (such as ocnophilia and philobatism), as well as his idea about analytic treatment with its phases of regression and "new beginning". His style and his discretion in treatment and mainly the responsibility he recommended to the analysts seem to me very important not to forget. I have shown him as Ferenczi's heir and how he continued his work. His clinical approach and his style are evoked to alert contemporary analysts--who sometimes just know his method to train general practitioners through the Balint group--that they have been influenced unbeknown to them.     

Does a yellow filter improve visual object categorization in normal aging?

Previous studies have shown that a yellow filter (CPF450) can increase contrast, motion sensitivity, vergence, and accommodation. We investigated whether a yellow filter can reduce age-related visual deficits. We tested two groups of 60 observers (mean age 24 vs. 72) in an object categorization task. Grayscale photographs of natural objects and artifacts were displayed either centrally or peripherally (21°) at low (8%) or medium (30%) contrast. There were three filter conditions (no filter, placebo filter, and yellow filter). Both groups of observers performed similarly on central and medium-contrast pictures. The deleterious effects of reduced contrast and eccentricity were stronger in elderly individuals. Moreover, the yellow filter globally improved the speed of categorization for the elderly participants. The decrease in response time in the yellow filter condition was larger when the stimuli were displayed peripherally in both groups. A yellow filter should be considered as a potential means for visual improvement in normal aging.     

An ecological approach to cognitive enhancement: Complex motor training

Cognitive training has received a lot of attention recently, yielding findings that can be conflicting and controversial. In this paper, we present a novel approach to cognitive training based on complex motor activities. In a randomized controlled design, participants were assigned to one of three conditions: aerobic exercise, working memory training or designed sport — an intervention specifically tailored to include both physical and cognitive demands. After training for eight weeks, the designed sport group showed the largest gains in all cognitive measures, illustrating the efficacy of complex motor activities to enhance cognition. Designed sport training also revealed impressive health benefits, namely decreased heart rate and blood pressure. In this period of skepticism over the efficacy of computerized cognitive training, we discuss the potential of ecological interventions targeting both cognition and physical fitness, and propose some possible applications.     

The importance of perceived autonomy support for the psychological health and work satisfaction of health professionals: Not only supervisors count, colleagues too!

Previous studies show that supervisors?? autonomy-supportive style predicts greater psychological health (Baard et al. in J Appl Soc Psychol 34:2045?C2068, 2004; Blais and Brière 1992; Lynch et al. in Prof Psychol Res Pract 36:415?C425, 2005) and lower psychological distress (Deci et al. in Personal Soc Psychol Bull 27:930?C942, 2001). The goal of the present study is to extend these results and investigate the contribution of colleagues?? perceived autonomy support in the prediction of health professionals?? work satisfaction and psychological health. The combined impact of supervisors?? and colleagues?? perceived autonomy support is also examined. A sample of 597 health professionals from the province of Quebec (Canada) completed a questionnaire, which included measures of perceived supervisors?? and colleagues?? autonomy support and outcome variables. Results confirm that supervisors?? and colleagues?? perceived autonomy support predict health professionals?? work satisfaction and psychological health. Results also show that colleagues?? perceived autonomy support adds to the prediction of health professionals?? work satisfaction, subjective well-being, and suicidal ideation above and beyond supervisors?? perceived autonomy support.     

Measurement of the size effect in the yield strength of nickel foils

There is a growing consensus that materials become stronger in small volumes and in the presence of large strain gradients. It has not been clear whether this is due to increased resistance to the motion of dislocations, fewer dislocations, or increased difficulty of multiplying dislocations in these situations. A classic experiment by Stölken and Evans (J.S. Stölken and A.G. Evans, Acta metall. 46 5109 (1998)) showed that thin nickel foils under bending display increased strengthening at large plastic strain values and, correspondingly, large plastic strain gradients. We have adapted their technique to small strains, and report preliminary data for the stress–strain curves of thin nickel foils through the elastic–plastic transition. These data show unambiguously that the yield strength is greater in the thinner foils. The strengthening is additive to the Hall–Petch effect, and is consistent with a size effect at the onset of plastic deformation.     

Applied Sport Psychology Supervision Experience: A Qualitative Analysis

We examined the supervision experience of graduate trainees in applied sport psychology. Semistructured interviews conducted with sport psychology trainees were analyzed through the use of consensual qualitative research methodology. Three domains emerged from the analysis: programmatic factors, supervision process, and supervision content. The results provide insights (e.g., desired supervisor qualities) into the aspects of supervision that trainees feel address their needs, as well as instances in which the supervision experience could be improved. The findings may have implications (e.g., areas of potential growth for sport psychology supervision) for future research directions on supervision in applied sport psychology and could offer potential areas of consideration for current supervisors.