Digit identity influences numerical estimation in children and adults

Learning the meanings of Arabic numerals involves mapping the number symbols to mental representations of their corresponding, approximate numerical quantities. It is often assumed that performance on numerical tasks, such as number line estimation (NLE), is primarily driven by translating from a presented numeral to a mental representation of its overall magnitude. Part of this assumption is that the overall numerical magnitude of the presented numeral, not the specific digits that comprise it, is what matters for task performance. Here we ask whether the magnitudes of the presented target numerals drive symbolic number line performance, or whether specific digits influence estimates. If the former is true, estimates of numerals with very similar magnitudes but different hundreds digits (such as 399 and 402) should be placed in similar locations. However, if the latter is true, these placements will differ significantly. In two studies (N = 262), children aged 7–11 and adults completed 0–1000 NLE tasks with target values drawn from a set of paired numerals that fell on either side of “Hundreds” boundaries (e.g., 698 and 701) and “Fifties” boundaries (e.g., 749 and 752). Study 1 used an atypical speeded NLE task, while Study 2 used a standard non‐speeded NLE task. Under both speeded and non‐speeded conditions, specific hundreds digits in the target numerals exerted a strong influence on estimates, with large effect sizes at all ages, showing that the magnitudes of target numerals are not the primary influence shaping children's or adults’ placements. We discuss patterns of developmental change and individual difference revealed by planned and exploratory analyses.     

Developmental Variation in the Associations of Attention Bias to Emotion with Internalizing and Externalizing Psychopathology

Research on Child and Adolescent Psychopathology - Attention biases to emotion are associated with symptoms of internalizing and externalizing psychopathology in children and adolescents. It is...     

Young homeless drug users—ways of coping with harassment

This paper explores young homeless drug users' ways of coping with harassment. Discussions of coping and harassment are based on the cognitive appraisal model. Coping accounts were essentially problem‐focused and action‐oriented. Results indicate the need for more policy developments to prevent homelessness and for specific interventions around homelessness and harassment. Copyright © 2000 John Wiley & Sons, Ltd.     

The relationship between self-harm and alexithymia: A systematic review and meta-analysis

Self-harm, defined for the purpose of this review as any act of self-injury without explicit suicidal intent, is an increasing public health concern, with potential long-term implications for those who engage in it. Previous research has identified a correlational relationship between self-harm and alexithymia, an emotion processing deficit characterized by difficulties identifying and describing feelings, and an externally orientated thinking style. Through a systematic search of the literature, the current review examines the association between alexithymia and self-harm. A meta-analysis based on 23 studies found a significant, positive relationship between self-harm and alexithymia, with a medium effect size (g = 0.57, 95% CI 0.46–0.69). All 23 studies used the Toronto Alexithymia Scale (TAS20) to measure alexithymia. The alexithymia subcomponents difficulty identifying feelings and difficulty describing feelings were significantly associated with self-harm, but there was no significant association between self-harm and externally orientated thinking. The effect size of the relationship was significantly larger in adolescent samples compared with adult samples and in female compared with male samples. The definition of self-harm did not affect the effect size of the relationship between alexithymia and self-harm and the results are consistent with previous meta-analyses focused more narrowly on non-suicidal self-injury and, separately, suicidal behaviors. Heterogeneity between the included studies was high. The results support an affect regulation model of self-harm, in which self-harm is used to regulate an emotional experience that is poorly understood.     

Admiration Over Time

In this paper, we investigate the diachronic fittingness conditions of admiration – that is, what it takes for a person to continue or cease to be admirable over time. We present a series of cases that elicit judgements that suggest different understandings of admiration over time. In some cases, admirability seems to last forever. In other cases, it seems that it can cease within a person's lifetime if she changes sufficiently. Taken together, these cases highlight what we call the puzzle of admiration over time. We then present a potential solution to this puzzle.     

亲历美国哲学50年

20世纪的哲学系生产了大量的哲学博士,许多博士日后又成为哲学教师。在这些系科中,“分析哲学”一直居于主导地位。一个正经八百的研究生也许会这样看待过去50年的历史：直至30年代某一时期,美国的哲学尚未成形。其后,随着逻辑实证主义登上历史舞台,大约50年前,多数美国哲学家都成了实证主义者。这种进展的一个特点是给哲学学科引入了“高度严格的标准”。哲学变得“清楚”,而且人人都要学点现代逻辑。     

Cumulative Index Volumes 39–48 (1996–2000)

Other Index

Cumulative Index Volumes 39–48 (1996–2000)