Extensive occupational finger use delays age effects in tactileperception—an ERP study

Tactile expertise, resulting from extensive use of hands, has previously been shown to improve tactile perception in blind people and musicians and to be associated with changes in the central processing of tactile information. This study investigated whether expertise, due to precise and deliberate use of the fingers at work, relates to improved tactile perception and whether this expertise interacts with age. A tactile pattern and a frequency discrimination task were conducted while ERPs were measured in experts and nonexperts of two age groups within middle adulthood. Independently of age, accuracy was better in experts than in nonexperts in both tasks. Somatosensory N70 amplitudes were larger with increasing age and for experts than for nonexperts. P100 amplitudes were smaller in experts than in nonexperts in the frequency discrimination task. In the pattern discrimination task, P300 difference wave amplitude was reduced in experts and late middle-aged adults. In the frequency discrimination task, P300 was more equally distributed in late middle-aged adults. We conclude that extensive, dexterous manual work leads to acquisition of tactile expertise and that this expertise might delay, but not counteract, age effects on tactile perception. Comparable neurophysiological changes induced by age and expertise presumably have different underlying mechanisms. Enlarged somatosensory N70 amplitudes might result from reduced inhibition in older adults but from enhanced, specific excitability of the somatosensory cortex in experts. Regarding P300, smaller amplitudes might indicate fewer available resources in older adults and, by contrast, a reduced need to engage as much cognitive effort to the task in experts.     

Language use of depressed and depression-vulnerable college students

Essays written by currently-depressed, formerly-depressed, and never-depressed college students were examined for differences in language that might shed light on the cognitive operations associated with depression and depression-vulnerability. A text analysis program computed the incidence of words in predesignated categories. Consistent with Beck's cognitive model and with Pyczsinski and Greenberg's self-focus model of depression, depressed participants used more negatively valenced words and used the word, "I" more than did never-depressed participants. Formerly-depressed (presumably depression-vulnerable) participants did not differ from never-depressed participants on these indices of depressive processing. However, consistent with prediction, formerly-depressed participants' use of the word "I" increased across the essays and was significantly greater than that of never-depressed writers in the final portion of the essays.     

The ecological validity of the autonomic-subjective response dissociation in repressive coping

Background and Objectives: Repressive coping has been associated with elevated cardiovascular reactivity and diminished self-reported negative affect (so-called autonomic-subjective response dissociation, ASRD) in response to laboratory stressors. However, there is a lack of knowledge regarding the ecological validity of this response pattern. Design: An ambulatory assessment strategy was applied in order to analyze associations between ASRD and repressive coping throughout a day. Methods: A sample of 114 individuals was recruited. Heart rate was recorded via ECG and subjective reports of negative affect as well as the experience of demand and control (as indicators of stress) and situational characteristics were assessed several times a day via mobile electronic devices. Results: Repressive coping relative to other coping dispositions was accompanied by elevated ASRD during stressful episodes in daily life, thus supporting previous laboratory research. Conclusions: The findings suggest that repressive coping is associated with a discrepancy between subjective reports of negative affect and autonomic responding to stressful encounters in everyday life, which might impact health.     

The Communities That Care (CTC) Family Attachment Scale: Measurement Invariance Across Family Structures

Familial protective factors are an integral part of prevention approaches aimed at problematic behaviour in adolescents. However, there is scarce evidence on the role of familial protective factors in families deviating from the two-parent family configuration. For evaluating targeted (preventive) interventions, a reliable and valid measurement of familial protective factors is crucial. We investigated the factor structure of the Communities That Care (CTC) Family Attachment Scale and tested its measurement invariance in different family structures. Adolescents (n?=?2.459, grades 6–11) from Lower Saxony, Germany filled in the German version of the CTC Youth Survey. Our analyses focused on the CTC Family Attachment Scale measuring the adolescent’s attachment to the mother and the father with six items. We evaluated the postulated unidimensional structure of the scale by confirmatory factor analysis (CFA) and tested the measurement invariance using multigroup factor analyses across different family structures (two-parent family/single-parent family). We used SPSS V.23 and the R packages lavaan and semTools. The two-factor solution for the CTC Family Attachment Scale with one factor representing attachment to the mother and one indicating attachment to the father had an adequate model fit in the total sample (χ²(5)?=?29.938; p?<?.001; CFI?=?.996; TLI?=?.988; RMSEA?=?.050, SRMR?=?.019). This two-factor solution of the CTC Family Attachment Scale showed strong measurement invariance regarding adolescents living in a two-parent family vs. those living with a single parent. The two-factor CTC Family Attachment Scale appears to be a suitable measure to assess family attachment in both two-parent and single-parent families with German adolescents.     

Benefits of expressive writing in lowering rumination and depressive symptoms

Depression-vulnerable college students (with both elevated prior depressive symptoms and low current depressive symptoms) wrote on 3 consecutive days in either an expressive writing or a control condition. As predicted, participants scoring above the median on the suppression scale of the Emotion Regulation Questionnaire (Gross & John, 2003) showed significantly lower depression symptoms at the 6-month assessment when they wrote in the expressive writing versus the control condition. Additional analyses revealed that treatment benefits were mediated by changes in the Brooding but not the Reflection scale of the Ruminative Response Scale (Nolen-Hoeksema & Morrow, 1991). A "booster" writing session predicted to enhance treatment benefits failed to have a significant effect.     

Children's Lived Spaces in the Inner City: Historical and Political Aspects of the Psychology of Place

Children's lives are tied to particular places, which are the stage where the psychological drama of the human community is played out. This biographical research study investigates and documents the experiences of children's lived spaces in Pittsburgh's Hill District. The Hill District is a traditionally immigrant and African American neighborhood, which has suffered through segregation, the turmoil of urban renewal, race riots, gang warfare, and drug-related crime. When we look at the history of a particular place, we often forget that its children are raised and participate in the same historical stream. What was childhood like for the children who grew up in The Hill over the past century?

Adapting the ethnographic method of narrative mapping (Lutz, Behnken, & Zinnecker, 1997 Lutz, M., Behnken, I. and Zinnecker, J. 1997. “Narrative Landkarten [Narrative maps]”. In Handbuch Qualitative Forschungmethoden in der Erziehungswissenschaft, Edited by: Friebertshäuser, B. and Prengel, A. 414–435. Germany: Juventa Verlag.. Weinheim und Muenchen [Google Scholar]), 12 African American adults (24 to 84 years old), who spent their childhoods in the Hill District, were interviewed and asked about their childhood roaming spaces. The story about lived space that emerged through the choral voices of the participants is of childhood places marked by political and cultural changes. Each generation of 10-year-olds (1930's to 2000) lived in the same geographical area, but experienced and lived their neighborhood places in dramatically different ways.     

Knowledge and abilities: The need for a new understanding of knowing-how

Stanley and Williamson (The Journal of Philosophy 98(8), 411–444 2001) reject the fundamental distinction between what Ryle once called ‘knowing-how’ and ‘knowing-that’. They claim that knowledge-how is just a species of knowledge-that, i.e. propositional knowledge, and try to establish their claim relying on the standard semantic analysis of ‘knowing-how’ sentences. We will undermine their strategy by arguing that ‘knowing-how’ phrases are under-determined such that there is not only one semantic analysis and by critically discussing and refuting the positive account of knowing-how they offer. Furthermore, we argue for an extension of the classical ‘knowing-how’/‘knowing-that’-dichotomy by presenting a new threefold framework: Using some core-examples of the recent debate, we will show that we can analyze knowledge situations that are not captured by the Rylean dichotomy and argue that, therefore, the latter has to be displaced by a more fine-grained theory of knowledge-formats. We will distinguish three different formats of knowledge we can have of our actions, namely (1) propositional, (2) practical, and (3) image-like formats of knowledge. Furthermore, we will briefly analyze the underlying representations of each of these knowledge-formats.     

The development of hazard perception: Dissociation of visual orientation and hazard processing

Eye movements are a key behavior for visual information processing in traffic situations and for vehicle control. Previous research showed that effective ways of eye guidance are related to better hazard perception skills. Furthermore, hazard perception is reported to be faster for experienced drivers as compared to novice drivers. However, little is known whether this difference can be attributed to the development of visual orientation, or hazard processing. In the present study, we compared eye movements of 20 inexperienced and 20 experienced drivers in a hazard perception task. We separately measured (a) the interval between the onset of a static hazard scene and the first fixation on a potential hazard, and (b) the interval between the first fixation on a potential hazard and the final response. While overall RT was faster for experienced compared to inexperienced drivers, the scanning patterns revealed that this difference was due to faster processing after the initial fixation on the hazard, whereas scene scanning times until the initial fixation on the hazard did not differ between groups.     

Practice Effects in Bimanual Force Control: Does Age Matter?

ABSTRACT

The authors examined age-related differences in fine motor control during a bimanual coordination task. The task required the modulation of fingertip forces in the precision grip according to a visually presented sinusoidal antiphase pattern (force range 2–12 N; frequency 0.2 Hz). Thirty-four right-handed participants of three age groups (young, early middle-aged, and late middle-aged) practiced 30 trials of the task. Accuracy and variability of relative timing and relative forces at minima and maxima of the sine wave were analyzed for hand–hand and hand–stimulus couplings and compared between age groups. Analysis showed for relative timing and force weaker hand–hand than hand–stimulus coupling as well as lower accuracy and higher variability for minima as compared to maxima. Further, we analyzed practice effects by comparing the first and last trials and characterized the course of practice by detecting the transition of a steeper to a shallower acquisition slope for the different age groups. Late middle-aged participants demonstrated poorer performance than both other groups for all parameters. All groups improved performance to a similar amount. However, an age-related difference in acquisition strategy is visible. Late middle-aged participants seemed to have focused on improvement of force amplitude, whereas young and early middle-aged focused on timing.     

When the going gets tough…: Self-motivation is associated with invigoration and fun

Personality systems interaction (PSI) theory postulates two executive control modes in volitional action: Self-control and self-regulation (self-motivation). Self-control should deplete energy whereas self-motivation should maintain energy and result in invigoration. There were three groups of participants: Self-control, self-motivation, and pretend, who performed a resource-demanding Stroop-Shift and an anagram task. Performance and energy expenditure were examined in each task. Compared to the other groups, the self-motivation group showed increments in blood glucose throughout the experiment, indicating invigoration, and had better performance on the difficult Stroop-Shift task than the self-control group. Additionally, for the self-motivation group anagram performance correlated with less effort and ease of concentration and was moderated by fun in the task. These results are consonant with the predictions of PSI and self-determination theories. It is concluded that self-control depletes resources whereas self-motivation is associated with invigoration in carrying resource-demanding tasks.