The Multifaceted Relationship Between Physical Activity and Affect

The purpose of the present paper is to provide a summary of scientific findings on the relationship between physical activity (PA) and affect. We provide separate narrative reviews of (a) the association between PA and well‐being in the general population; (b) PA as a prophylactic and/or treatment for clinical depression; and (c) immediate affective response to individual PA sessions and the implications for adherence to PA programs. Findings suggest an association between engaging in regular PA and more positive well‐being, decreased risk of future depression, and reduction of depressed mood among those who are already depressed. However, despite the fairly strong evidence for these associations, there is less evidence for causal effects of PA on well‐being and depression. Individual sessions of PA generally result in positive shifts in affective valence from pre‐PA to post‐PA, but during PA, affective response is intensity‐dependent, with considerable variability for moderate intensity PA. In sum, despite the “physical activity feels good” narrative often portrayed in the popular media, the relationship between PA and affect is complex and multifaceted.     

Postural Control Complexity and Fatigue in Minimally Affected Individuals with Multiple Sclerosis

This study investigated changes in postural control complexity in people with multiple sclerosis (PwMS) before and after a fatigue protocol. Thirteen minimally affected PwMS (1.53 ± 1.03- Expanded Disability Status Scale) and 12 non-MS controls. Postural test included quiet stance on a force platform under two visual conditions (saccades and fixation) before and after a fatigue protocol. Postural complexity was assessed through the multiscale entropy. A three-way ANOVA showed a main effect of fatigue in the medial-lateral direction (p <0.007), with fatigue protocol reducing postural complexity in both groups. No differences were found between groups or visual conditions. Minimally affected PwMS demonstrated similar postural complexity compared with non-MS controls under both visual tasks and showed similar decrements in postural complexity as a result of fatigue.     

Living circumstances of children and adults with mental retardation or developmental disabilities in the United States, Canada, England and Wales, and Australia

The purpose of this article was to collate evidence to describe where people with mental retardation or developmental disabilities live in five developed countries: United States, Canada, England, Wales, and Australia. Family homes are important dwelling places for people with mental retardation. They are the home of the great majority of children with mental retardation and a considerable proportion of adults with mental retardation. The likelihood of placement outside the family home increases with adulthood and progressively as people age. Adults with mental retardation live in a wide variety of settings, with formal residential provision frequently dependent on the arrangements that the authorities responsible for providing service support have chosen to make. There has been a considerable move away from accommodating people in large segregated and geographically isolated institutions in the countries considered. However, the current range of accommodation includes much with a distinctively different character to the homes where other citizens live. Many people still live in larger groups than would be ordinarily found in typical homes and this may necessitate departure from the architectural norm. In all of the countries considered, there has been a recent trend towards small community settings, compatible with typical housing architecture. This appears furthest advanced in the U.S. but is discernible elsewhere. Availability of residential services at a national level varies between 100 and 155 places per 100,000 total population. Regional variation within countries is even greater. In no case is the national availability considered adequate to meet the demand arising from changing need or expectations. MRDD Research Reviews 7:115-121, 2001. (c) 2001 Wiley-Liss, Inc.     

Inner speech as a retrieval aid for task goals: the effects of cue type and articulatory suppression in the random task cuing paradigm

Articulatory suppression has been shown to increase switch costs in the list paradigm (e.g., [J. Exp. Psychol.: General 130 (2001) 641, J Memory Language 48 (2003) 148]). The present dual-task study examined whether this effect generalizes to the random task cuing paradigm. Participants performed color or shape judgments according to explicit word cues (COLOR or SHAPE) or less transparent letter cues ( C for the color task and S for the shape task). In the word cue condition, the switch cost was equivalent for the articulatory suppression and the control (no dual-task) conditions, but, in the letter cue condition, the switch cost was significantly greater for the articulatory suppression condition than for the control condition. These results suggest that inner speech may be recruited as a tool for retrieving and activating the relevant task goal when the task cue is not transparent and hence imposes nonnegligible retrieval demand.     

Measuring individual and cultural differences in implicit trait theories

A new measure of implicit theories or beliefs regarding the traitedness versus contextuality of behavior was developed and tested across cultures. In Studies 1 (N = 266) and 2 (N = 266), these implicit beliefs dimensions were reliably measured and replicated across U.S. college student samples and validity evidence was provided. In Study 3, their structure replicated well across an individualistic culture (the United States; N = 249) and a collectivistic culture (Mexico; N = 268). Implicit trait and contextual beliefs overlapped only modestly with implicit entity theory beliefs and were predicted by self-construals in ways that generally supported cultural psychology hypotheses. Implicit trait beliefs were fairly strongly endorsed in both cultures, suggesting that such beliefs may be universally held.     

COVID-19 Vaccination Acceptance: A Case of Interplay Between Political and Health Dimensions

Vaccines are essential for the eradication of diseases. Yet for many reasons, individuals do not embrace them completely. In the COVID-19 pandemic and with the possibility of the Brazilian population's immunization against the disease, both political and health-related dimensions might have had a role in individual COVID-19 vaccination acceptance. In two studies (n = 974), we tested the hypothesis that participants' vaccination acceptance is related to their past vote in the 2018 Brazilian presidential election (being or not being a Jair Bolsonaro voter) and their different levels of perceived vulnerability to disease (PVD). We further tested whether Bolsonaro's opposition or ambiguous messages towards vaccination (vs. control) increased vaccination rejection among those who have (vs. have not) voted for him and who are low (vs. high) in PVD. Results show that Bolsonaro (vs. non-Bolsonaro) voters accepted less vaccination, with higher rejection rates when participants expressed low (vs. high) PVD. Also, when primed either with Bolsonaro's opposed or ambiguous messages towards COVID-19 vaccination, such participants accepted less vaccines (vs. participants primed with neutral information). These findings are the first to show that the COVID-19 vaccine acceptance is related to their past vote and leadership influence but also different levels of perceived vulnerability to disease.     

Pattern-contingent color aftereffects on noninduced patterns

In a series of experiments, we found that in addition to expected reports of color aftereffects on patterns viewed during induction, reliable and predictable reports of color were given by subjects to patterns they did not view during induction. These reports to noninduced patterns were generally to patterns that were orthogonal to the patterns seen during induction. Induction with, for example, a red vertical grating led to appropriate aftereffects (i.e., green) on that vertical pattern and to the complementary aftereffect (i.e., pink) on a horizontal grating. We suggest that such color aftereffects on noninduced patterns are based on a shift in the activity of orientation coding mechanisms as a result of viewing the inducing patterns. We further propose that the results are consistent with the Lie transformation group theory of neuropsychology and that they add to a growing body of research demonstrating the applicability of this theory to the understanding of pattern-contingent color aftereffects.     

Using serial interfaces and the C language for real-time experiments

The use of the serial interface of the IBM PC for timing and stimulus-response signaling is discussed. C language example programs, including two small software utility modules that expedite the programming of real-time experiments using a serial interface, are presented that are compilable with Borland’s Turbo C.     

TIMEX: A simple IBM AT C language timer with extended resolution

The simple timing method of reading the IBM-BIOS tick counter is extended from 55-msec to 54-µsec resolution by reading the 8254 hardware counter. Subroutine timex( ) implements the timer in Borland Turbo C on an IBM AT and on a PC or XT if the 8253 timer chip is replaced with an 8254 chip. A more limited version operates on an unmodified PC or XT.