Sérgio Schaefer
Datos Biográficos
| ID | 1035534 |
|---|---|
| NOMBRE | Sérgio Schaefer |
| NOMBRES | Sérgio |
| APELLIDO | Schaefer |
| FIRMA | SCHAEFER S |
| AFILIACIONES | Saarland University |
| ORCID | 0000-0001-7890-9132 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 11 |
| TOTAL DE CITAS | 32 |
| OBRAS COMO AUTOR | 11 |
| OBRAS COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2008 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2025 |
| ÍNDICE H | 2 |
Tracing the lines of deceit. Male cheating behavior increases in online versus face-to-face environments over time
This study investigates the development of cheating behavior over time in online versus in-person environments among university students, with a particular focus on potential gender differences. Previous research suggests that online anonymity increases cheating (Charness et al., 2007), and cheating increases over time (Garrett et al., 2016). In the current study, 137 participants (online: n = 75, in-person: n = 62) with a balanced gender distrib…
Can acute resistance exercise facilitate episodic memory encoding
Research has shown benefits of physical exercise on memory performance when carried out before or after a memory task. The effects of concurrent physical exercise and particularly resistance exercise are still inconclusive. The current study investigates the influence of resistance exercise with two intensities (fast and slow squats) on performance in a wordlist learning task using a within-subject design. Sport students ( N = 58, M age = 23 year…
Too easy, too hard, or just right
In everyday life, individuals often need to make choices about the difficulty level of tasks they wish to perform. Here, we investigate age- and gender-related differences in the monitoring of discrepancies between the difficulty of a given task and one’s own performance level, and in the likelihood to select task difficulties that match one’s performance level. Male and female children, teenagers, younger adults, and older adults (total N = 160)…
Tennis expertise reduces costs in cognition but not in motor skills in a cognitive-motor dual-task condition
Dual-process theories predict performance reductions under dual-task situations (= situations where two tasks have to be processed and executed simultaneously), because limited cognitive resources have to be shared between concurrent tasks. Increases in expertise should reduce the attentional resources needed to perform a motor task, leading to reduced dual-task costs. The current studies investigated whether expert tennis players (performance ra…
Table tennis expertise influences dual-task costs in timed and self-initiated tasks
Theories on resource sharing predict that performances will suffer under dual-task conditions. However, increases in skill level should decrease attentional resources needed to perform a task, resulting in a reduction of dual-task costs. The current study investigates whether table tennis experts are better able than novices to keep up their motor and cognitive performances in a dual-task situation. Two different cognitive tasks, 3-back and Count…
A falácia da neutralidade na pesquisa e na educação
Problematizamos, neste estudo, a tradição e a emergência recente da propalada neutralidade na pesquisa e na educação. O objetivo é contribuir com o debate em torno das implicações filosóficas, sociais e políticas de propostas educacionais que desconsideram o envolvimento das pessoas e de suas utopias nas atividades que envolvem a pesquisa e a educação como ação do ser humano no mundo. Nossas reflexões decorreram de pesquisa de base bibliográfica,…
Eça e machado
Eça de Queirós, ao tomar o modelo realista-naturalista como referência para escrever seus dois romances – O crime do padre Amaro e O primo Basílio – tende a desfigurar a verdade moral dos fatos e, com isso, a enfraquecer a dimensão propriamente artística da obra literária e dos personagens. Machado de Assis, em Memórias póstumas de Brás Cubas, ao usar o recurso carnavalizante do “defunto autor”, recupera a figuração da verdade moral que deve esta…
Dialogismo, polifonia e carnavalização em Dostoiévski
Dostoiévski é o criador, na literatura, de três novas formas artísticas: o dialogismo, a polifonia e a carnavalização. Dostoiévski é o artista. Bakhtin vê com clareza como esse escritor conseguiu conservar em sua criação as tendências históricas da antiga sátira menipeia e, ao mesmo tempo, renová-las. Bakhtin é o crítico. O presente artigo procura mostrar a criação de Dostoiévski através da crítica de Bakhtin
A theoretical framework for the study of adult cognitive plasticity
Does plasticity contribute to adult cognitive development, and if so, in what ways?The vague and overused concept of plasticity makes these controversial questions difficult to answer.In this article, we refine the notion of adult cognitive plasticity and sharpen its conceptual distinctiveness.According to our framework, adult cognitive plasticity is driven by a prolonged mismatch between functional organismic supplies and environmental demands a…
Walking Variability and Working-Memory Load in Aging
Effects of cognitive activities on walking variability are poorly understood. We parametrically manipulated working-memory load by using an n-back task in 32 younger adults and 32 older adults walking on a treadmill at self-selected speed. We found no dual-task costs for cognitive performance. Stride-to-stride variability was lower when participants performed an easy working-memory task than when they walked without cognitive tasks. Increasing wo…
Age differences between children and young adults in the dynamics of dual-task prioritization
Task prioritization can lead to trade-off patterns in dual-task situations. The authors compared dual-task performances in 9- and 11-year-old children and young adults performing a cognitive task and a motor task concurrently. The motor task required balancing on an ankle-disc board. Two cognitive tasks measured working memory and episodic memory at difficulty levels individually adjusted during the course of extensive training. Adults showed per…
A theoretical framework for the study of adult cognitive plasticity
Does plasticity contribute to adult cognitive development, and if so, in what ways?The vague and overused concept of plasticity makes these controversial questions difficult to answer.In this article, we refine the notion of adult cognitive plasticity and sharpen its conceptual distinctiveness.According to our framework, adult cognitive plasticity is driven by a prolonged mismatch between functional organismic supplies and environmental demands a…
Walking Variability and Working-Memory Load in Aging
Effects of cognitive activities on walking variability are poorly understood. We parametrically manipulated working-memory load by using an n-back task in 32 younger adults and 32 older adults walking on a treadmill at self-selected speed. We found no dual-task costs for cognitive performance. Stride-to-stride variability was lower when participants performed an easy working-memory task than when they walked without cognitive tasks. Increasing wo…
Age differences between children and young adults in the dynamics of dual-task prioritization
Task prioritization can lead to trade-off patterns in dual-task situations. The authors compared dual-task performances in 9- and 11-year-old children and young adults performing a cognitive task and a motor task concurrently. The motor task required balancing on an ankle-disc board. Two cognitive tasks measured working memory and episodic memory at difficulty levels individually adjusted during the course of extensive training. Adults showed per…
Walking Variability and Working-Memory Load in Aging
Effects of cognitive activities on walking variability are poorly understood. We parametrically manipulated working-memory load by using an n-back task in 32 younger adults and 32 older adults walking on a treadmill at self-selected speed. We found no dual-task costs for cognitive performance. Stride-to-stride variability was lower when participants performed an easy working-memory task than when they walked without cognitive tasks. Increasing wo…
Age differences between children and young adults in the dynamics of dual-task prioritization
Task prioritization can lead to trade-off patterns in dual-task situations. The authors compared dual-task performances in 9- and 11-year-old children and young adults performing a cognitive task and a motor task concurrently. The motor task required balancing on an ankle-disc board. Two cognitive tasks measured working memory and episodic memory at difficulty levels individually adjusted during the course of extensive training. Adults showed per…
A theoretical framework for the study of adult cognitive plasticity
Does plasticity contribute to adult cognitive development, and if so, in what ways?The vague and overused concept of plasticity makes these controversial questions difficult to answer.In this article, we refine the notion of adult cognitive plasticity and sharpen its conceptual distinctiveness.According to our framework, adult cognitive plasticity is driven by a prolonged mismatch between functional organismic supplies and environmental demands a…
Dialogismo, polifonia e carnavalização em Dostoiévski
Dostoiévski é o criador, na literatura, de três novas formas artísticas: o dialogismo, a polifonia e a carnavalização. Dostoiévski é o artista. Bakhtin vê com clareza como esse escritor conseguiu conservar em sua criação as tendências históricas da antiga sátira menipeia e, ao mesmo tempo, renová-las. Bakhtin é o crítico. O presente artigo procura mostrar a criação de Dostoiévski através da crítica de Bakhtin
Eça e machado
Eça de Queirós, ao tomar o modelo realista-naturalista como referência para escrever seus dois romances – O crime do padre Amaro e O primo Basílio – tende a desfigurar a verdade moral dos fatos e, com isso, a enfraquecer a dimensão propriamente artística da obra literária e dos personagens. Machado de Assis, em Memórias póstumas de Brás Cubas, ao usar o recurso carnavalizante do “defunto autor”, recupera a figuração da verdade moral que deve esta…
A falácia da neutralidade na pesquisa e na educação
Problematizamos, neste estudo, a tradição e a emergência recente da propalada neutralidade na pesquisa e na educação. O objetivo é contribuir com o debate em torno das implicações filosóficas, sociais e políticas de propostas educacionais que desconsideram o envolvimento das pessoas e de suas utopias nas atividades que envolvem a pesquisa e a educação como ação do ser humano no mundo. Nossas reflexões decorreram de pesquisa de base bibliográfica,…
Tennis expertise reduces costs in cognition but not in motor skills in a cognitive-motor dual-task condition
Dual-process theories predict performance reductions under dual-task situations (= situations where two tasks have to be processed and executed simultaneously), because limited cognitive resources have to be shared between concurrent tasks. Increases in expertise should reduce the attentional resources needed to perform a motor task, leading to reduced dual-task costs. The current studies investigated whether expert tennis players (performance ra…
Table tennis expertise influences dual-task costs in timed and self-initiated tasks
Theories on resource sharing predict that performances will suffer under dual-task conditions. However, increases in skill level should decrease attentional resources needed to perform a task, resulting in a reduction of dual-task costs. The current study investigates whether table tennis experts are better able than novices to keep up their motor and cognitive performances in a dual-task situation. Two different cognitive tasks, 3-back and Count…
Can acute resistance exercise facilitate episodic memory encoding
Research has shown benefits of physical exercise on memory performance when carried out before or after a memory task. The effects of concurrent physical exercise and particularly resistance exercise are still inconclusive. The current study investigates the influence of resistance exercise with two intensities (fast and slow squats) on performance in a wordlist learning task using a within-subject design. Sport students ( N = 58, M age = 23 year…
Too easy, too hard, or just right
In everyday life, individuals often need to make choices about the difficulty level of tasks they wish to perform. Here, we investigate age- and gender-related differences in the monitoring of discrepancies between the difficulty of a given task and one’s own performance level, and in the likelihood to select task difficulties that match one’s performance level. Male and female children, teenagers, younger adults, and older adults (total N = 160)…
Tracing the lines of deceit. Male cheating behavior increases in online versus face-to-face environments over time
This study investigates the development of cheating behavior over time in online versus in-person environments among university students, with a particular focus on potential gender differences. Previous research suggests that online anonymity increases cheating (Charness et al., 2007), and cheating increases over time (Garrett et al., 2016). In the current study, 137 participants (online: n = 75, in-person: n = 62) with a balanced gender distrib…
Psychology (7 obras) · Cognitive psychology (6 obras) · Computer Science (5 obras) · Cognition (4 obras) · Developmental psychology (4 obras) · Motor Control and Adaptation (4 obras) · Cognitive resource theory (3 obras) · Elementary cognitive task (3 obras) · Engineering (3 obras) · Humanities (3 obras)