The influence of practice on the development of motor skills in pianists: a longitudinal study in a selected motor task

A longitudinal study was conducted to investigate the influence of practice on the long-term development of expert pianists' motor skills in a relevant musical context. Temporal evenness in standardized scale playing was assessed twice in 19 pianists within an average time interval of 27 months. Questionnaires were used for retrospective assessment of practice quantity and several qualitative parameters related to practicing of scales. The development of temporal evenness in scale playing over the follow-up period correlated with the practice time accumulated during that period and with the average daily practice time. Expert pianists with an average daily practice time of 3.75h or more showed an improvement of performance in this selected motor skill. No significant association was observed between motor skill development during the follow-up period and the content of practice. Stepwise linear regression revealed a model predicting 43% of the variance of motor skill development, with practice time accumulated during the follow-up period as the only predictor. It was concluded that, in expert pianists, maintenance of motor skills in the selected motor task was strongly influenced by practice quantity.     

Emotions over time: synchronicity and development of subjective, physiological, and facial affective reactions to music

Most people are able to identify basic emotions expressed in music and experience affective reactions to music. But does music generally induce emotion? Does it elicit subjective feelings, physiological arousal, and motor reactions reliably in different individuals? In this interdisciplinary study, measurement of skin conductance, facial muscle activity, and self-monitoring were synchronized with musical stimuli. A group of 38 participants listened to classical, rock, and pop music and reported their feelings in a two-dimensional emotion space during listening. The first entrance of a solo voice or choir and the beginning of new sections were found to elicit interindividual changes in subjective feelings and physiological arousal. Quincy Jones' "Bossa Nova" motivated movement and laughing in more than half of the participants. Bodily reactions such as "goose bumps" and "shivers" could be stimulated by the "Tuba Mirum" from Mozart's Requiem in 7 of 38 participants. In addition, the authors repeated the experiment seven times with one participant to examine intraindividual stability of effects. This exploratory combination of approaches throws a new light on the astonishing complexity of affective music listening.     

Responding in configural discrimination problems depends on density of reinforcement in time

Previous research has shown that conditioned responding in differential skin conductance conditioning increased for reinforced stimuli (CSs+) but remained constant for nonreinforced stimuli (CSs-) due to decreasing reinforcement density. The present two experiments (Experiment 1: Negative patterning; Experiment 2: Positive patterning) were designed to disentangle a possible confound of reinforcement density with stimulus frequency. In order to achieve this, we varied the intertrial interval (18 s, 24 s, or 48 s) and held constant the numbers of CSs+ and of CSs- in each of both discrimination problems. With increasing intertrial intervals, we found higher responding both to CSs+ and to CSs- as well as increased response differentiation. We discuss these results with respect to two mechanisms offered by Wagner's SOP model and conclude that the observed effects are due to variations in density of reinforcement in time.     

How knowing and doing inform an autobiography: relations among preschoolers' theory of mind,narrative, and event memory skills

Research on the development of autobiographical memory in children has revealed the importance of two seemingly separate but related factors: Theory of mind, or the ability to know what another can and cannot know, and narrative skill, or the ability to tell a coherently structured story. The present research study with 22 preschoolers examined the extent to which each factor predicts two separate components of autobiographical memory ability: (1) the content of memory and (2) the structure of the memory narrative. As hypothesized, we found that theory of mind skills predicted the ‘how’ or structure of the children's fictional story narratives, whereas narrative skills predicted the ‘how much’ or content of the children's memory. Implications for the development of autobiographical memory are discussed. Copyright © 2004 John Wiley & Sons, Ltd.     

Potential negative consequences of mindfulness in the moral domain

Mindfulness is a state of paying conscious and nonjudgmental attention to present-moment experiences. Previous research relates this state to more effective emotion regulation and less emotion reactivity. We therefore hypothesized an attenuating effect of a mindfulness exercise on moral reactions that usually results from a bad conscience when having caused harm. Across five studies, we experimentally induced mindfulness via a short breathing exercise and then assessed harm-based moral reactions. As hypothesized, participants in the mindfulness (vs. control) exercise condition showed (i) attenuated repair intentions after having read a scenario in which participants caused harm to a friend (Study 3) and (ii) attenuated intentions to change harm-causing eating habits (Study 4). Results of Studies 1, 2 and 5 did not provide evidence for our hypothesis. A following meta-analysis across all five studies yielded an overall significant effect of mindfulness in the harm-condition, providing preliminary evidence for a potential downside to mindfulness.     

The attenuating effect of mortality salience on dishonest behavior

People are easily tempted to engage in dishonest behavior when an incentive is given and when full anonymity is provided. In the present work, we investigated existential threat as a motivational factor that might reduce dishonest behavior. Research based on terror management theory has found that mortality salience increases the motivation to fulfill salient values of one’s cultural worldview. Assuming the concept of honesty is important to human societies, we hypothesized that mortality salience will reduce dishonest behavior when the concept of honesty is salient. In two experiments, we assessed dishonesty under full anonymity by applying a die-under-the-cup paradigm with the expected value serving as a stochastic baseline for honest behavior. Both experiments provided support for our hypothesis. Given an incentive to cheat, when the concept of honesty was cognitively activated by a word-search puzzle (Study 1) or by the name of the dice game (i.e., “honest game”; Study 2), mortality salient participants showed not only less dishonest behavior but actually honest behavior.

     

Measuring emotions during epistemic activities: the Epistemically-Related Emotion Scales

Measurement instruments assessing multiple emotions during epistemic activities are largely lacking. We describe the construction and validation of the Epistemically-Related Emotion Scales, which measure surprise, curiosity, enjoyment, confusion, anxiety, frustration, and boredom occurring during epistemic cognitive activities. The instrument was tested in a multinational study of emotions during learning from conflicting texts (N?=?438 university students from the United States, Canada, and Germany). The findings document the reliability, internal validity, and external validity of the instrument. A seven-factor model best fit the data, suggesting that epistemically-related emotions should be conceptualised in terms of discrete emotion categories, and the scales showed metric invariance across the North American and German samples. Furthermore, emotion scores changed over time as a function of conflicting task information and related significantly to perceived task value and use of cognitive and metacognitive learning strategies.     

Dream recall, dream length, and sleep duration: state or trait factor

Longer sleep duration should be related to dream recall (longer REM sleep), but previous findings regarding the relationship between habitual sleep duration and dream recall frequency have been conflicting, whereas experimental manipulation of sleep duration yielded a significant effect. The analysis of diaries kept by the 444 participants over 14 days indicated that intra-individual fluctuations and interindividual differences in sleep duration affect dream recall.     

Achievement Emotions: A Control-Value Approach

Emotions are ubiquitous in achievement settings. Apart from test anxiety research and attributional studies, psychological research has neglected these emotions. We argue that more research on the functions, origins, and regulation of achievement emotions is needed, addressing both outcome emotions related to success and failure, such as hope, pride, anxiety, shame, and hopelessness, and activity emotions such as the enjoyment and boredom experienced in achievement settings. Using Pekrun’s (2006) control-value theory of achievement emotions as a theoretical framework, we first outline a three-dimensional (object focus × valence × activation) taxonomy of achievement emotions. We then summarize research on the individual and social origins of these emotions, arguing that control appraisals, value appraisals, achievement goals, and related contextual factors are of specific relevance for achievement emotion arousal. Next, the importance of emotions for achievement behavior and performance is addressed. In conclusion, we discuss the regulation and modification of achievement emotions and their relative universality across genders, settings, and cultures.     

Motivational determinants of systematic processing: expectancy moderates effects of desired confidence on processing effort

Extending the motivational assumptions of the heuristic-systematic model (Chaiken, Liberman, & Eagly, 1989), the authors hypothesized that a discrepancy between desired and actual judgmental confidence raises processing effort only if the expectancy that processing will increase confidence is high. In Experiment 1, university students expected to review information for upcoming social judgments. Desired confidence was varied through low versus high task importance. To manipulate expectancy, low versus high perceived processing efficacy was induced via feedback. As predicted, high- (as compared to low-) importance participants expressed greater interest in receiving information and selected more information when perceived efficacy was high, and this effect was mediated via a heightened discrepancy between desired and actual confidence. These effects were not obtained under low perceived efficacy. In Experiment 2, students processed a persuasive message. Only high importance conditions were studied; processing efficacy and argument strength were manipulated. As predicted, high- (but not low-) efficacy participants processed the message systematically, as indicated by a different impact of argument strength and by mediational path analyses. It is argued that the precision of social judgment models would benefit from an explicit consideration of processing- and outcome-related expectancy variables. © 1998 John Wiley & Sons, Ltd.