Adaptive motor behavior of cerebellar patients during exposure to unfamiliar external forces

The authors investigated adaptation of goal-directed forearm movements to an unknown external viscous force assisting forearm flexion in 6 patients with cerebellar dysfunction and in 6 control participants. Motor performance was generally degraded in cerebellar patients and was markedly reduced under the force condition in both groups. However, patients and controls were able to adapt to the novel force within 8 trials. Only the healthy controls were able to improve motor performance when readapting to a null-force condition. The results indicate that cerebellar patients' motor control system has imprecise estimations of actual limb dynamics at its disposal. Force adaptation may have been preserved because single-joint movements were performed, whereas the negative viscous force alone and no interaction forces had to be compensated.     

Don’t believe everything you hear: Routine validation of audiovisual information in children and adults

Previous research has shown that the validation of incoming information during language comprehension is a fast, efficient, and routine process (epistemic monitoring). Previous research on this topic has focused on epistemic monitoring during reading. The present study extended this research by investigating epistemic monitoring of audiovisual information. In a Stroop-like paradigm, participants (Experiment 1: adults; Experiment 2: 10-year-old children) responded to the probe words correct and false by keypress after the presentation of auditory assertions that could be either true or false with respect to concurrently presented pictures. Results provide evidence for routine validation of audiovisual information. Moreover, the results show a stronger and more stable interference effect for children compared with adults.     

Understanding Systems Change in Early Implementation of Housing First in Canadian Communities: An Examination of Facilitators/Barriers,Training/Technical Assistance,and Points of Leverage

We present interim findings of a cross‐site case study of an initiative to expand Housing First (HF) in Canada through training and technical assistance (TTA). HF is an evidence‐based practice designed to end chronic homelessness for consumers of mental health services. We draw upon concepts from implementation science and systems change theory to examine how early implementation occurs within a system. Case studies examining HF early implementation were conducted in six Canadian communities receiving HF TTA. The primary data are field notes gathered over 1.5 years and evaluations from site‐specific training events (k = 5, n = 302) and regional network training events (k = 4, n = 276). We report findings related to: (a) the facilitators of and barriers to early implementation, (b) the influence of TTA on early implementation, and (c) the “levers” used to facilitate broader systems change. Systems change theory enabled us to understand how various “levers” created opportunities for change within the communities, including establishing system boundaries, understanding how systems components can function as causes of or solutions to a problem, and assessing and changing systems interactions. We conclude by arguing that systems theory adds value to existing implementation science frameworks and can be helpful in future research on the implementation of evidence‐based practices such as HF which is a complex community intervention. Implications for community psychology are discussed.     

Mood impact on cardiovascular reactivity when task difficulty is unclear

Research in the context of the mood-behavior-model (Gendolla in Rev Gen Psychol 4:348–408, 2000) has shown that moods can have an impact on effort mobilization due to congruency effects on demand appraisals. However, the mood research literature suggests that mood may also influence effort mobilization by its impact on appraisals of the instrumentality of success. In a single factor (mood valence: negative vs. neutral vs. positive) between-persons design, participants performed a memory task under conditions of unclear task difficulty. By successfully performing the task, participants could earn the chance to win a monetary reward. As predicted for tasks with unclear difficulty, effort mobilization—assessed as cardiovascular reactivity—increased from negative to positive mood. This effect was mediated by the subjective probability of winning the monetary reward for successful performance. These results demonstrate for the first time that mood can influence effort mobilization via the estimated instrumentality of success.     

The influence of selected variables on maternal perceptions of their infants at one month

The research reported here is an analysis of selected factors associated with the positive and negative perceptions of mothers toward their infants at one month. The data were collected as part of the larger evaluation of the Perinatal Positive Parenting program. In addition to the treatment or control status of the mother, age of mother, birth weight of the infant, one-minute APGAR score, and opportunity for mother-infant physical contact in the delivery room were included in the analyses. Significant differences were found for the APGAR score groups. A backward elimination regression technique found APGAR score, birth weight, and age of mother to be predictive of maternal perceptions.     

Perinatal positive parenting: Parent support groups

Parent-infant support groups offer first-time parents an opportunity to share their experiences and concerns with each other. This paper discusses the parent groups component of Perinatal Positive Parenting, a program for parents who deliver their first-born children at the William Beaumont Hospital in Royal Oak, Michigan. Formation of the support groups follows the program's hospital and in-home components. Group organization, structure, and meeting format are described and the volunteer group leader's role as facilitator is examined.     

Age and Gender Differences in the Use of Various Poisoning Methods for Deliberate Parasuicide Cases Admitted to Loghman Hospital in Tehran (2000–2004)

Different methods of poisoning used by individuals with the diagnosis of parasuicide admitted to the Loghman Hospital, Tehran, from 2000 to 2004 were investigated, with particular focus on gender and age differences. Drugs, pesticides, and other agricultural chemicals (women: 12.7%, men: 9%) were the most commonly used methods. In males, the percentage of use of drugs increased with age, but the frequency of pesticides use decreased with age. In females, drugs were most often used in the youngest age group, whereas the use of pesticides was lowest in the youngest age category. Females outnumbered males, especially in the youngest age group of 10 to 19 years olds. Drugs and pesticides were the substances used most often for parasuicide in each age group regardless of gender.     

Candidates' Ability to Identify Criteria in Nontransparent Selection Procedures: Evidence from an assessment center and a structured interview

In selection procedures like assessment centers (ACs) and structured interviews, candidates are often not informed about the targeted criteria. Previous studies have shown that candidates' ability to identify these criteria (ATIC) is related to their performance in the respective selection procedure. However, past research has studied ATIC in only one selection procedure at a time, even though it has been assumed that ATIC is consistent across situations, which is a prerequisite for ATIC to contribute to selection procedures' criterion‐related validity. In this study, 95 candidates participated in an AC and a structured interview. ATIC scores showed cross‐situational consistency across the two procedures and accounted for part of the relationship between performance in the selection procedures. Furthermore, ATIC scores in one procedure predicted performance in the other procedure even after controlling for cognitive ability. Implications and directions for future research are discussed.