THE PROBLEM OF MAGNITUDE AND CATEGORY SCALES: INTERPRETATION OF RESULTS

J unge , K. The problem of magnitude and category scales: interpretation of results. Scand. J. Psychol ., 1962, 3 , 215–218.—It is proposed that three main factors are responsible for the relation between magnitude and category scales: (1) ratio judgments on a transformed category scale, (2) interval judgments, and (3) hybrid judgments. The last term refers to the tentative explanation that magnitude judgments are a cross between pure ratio and interval judgments.     

PSYCHOPHYSICAL RELATIONS IN VISUAL PERCEPTION OF LENGTH, AREA AND VOLUME

E kman , G., and J unge , K. Psychophysical relations in visual perception of length, area and volume. Scand. J. Psychol ., 1961, 2 , 1–10. — Subjective length, area and volume as functions of the corresponding stimulus variables were studied in three experiments. The exponents of the psychophysical power functions scattered around 1 for perception of 'real' space. For perspective drawings of cubes and spheres, however, the exponents were about 0.75. From a further analysis of the data it was tentatively concluded that perspective and shadow are insufficient cues to visual volume, and that the subjective scale reflects perception of area rather than volume, especially in the case of small stimuli.     

A Systematic Review of Sleep Associations in Parents and Children

This systematic review aimed to examine sleep associations in a) typically developing children and their parents, and b) children with neurodevelopmental disorders and their parents. Literature search was conducted on PubMed, PsycINFO, EMBASE and Scopus databases for articles examining sleep associations between parents and children. Thirty studies were included in the final review. Based on the first aim, sleep associations between parents and typically developing children were observed for sleep quality, sleep duration and sleep efficiency. However, evidence for associations between sleepiness levels in parents and children and sleep schedules related to bedtime or waketime was limited. Based on the second aim, children with neurodevelopmental disorders and their parents reported greater sleep disturbances in comparison to typically developing children and their parents. The review concluded that sleep in parents and children is interrelated across a number of sleep parameters. It also revealed some preliminary evidence on bidirectionality in parent-child sleep, which warrants further examination. The review highlights the need to examine the mediating role of environmental factors on the interactions between parent-child sleep. Rigorous, longitudinal designs should be employed to explore the pathways through which parents may impact their children’s sleep and functioning and vice-versa.

     

Are there capacity limitations in symmetry perception?

Previous researchers have proposed that there are two types of symmetry detection: one based on crude preattentive symmetry judgments and another based on detailed scrutiny of individual parts (Barlow & Reeves, 1979; S. E. Palmer & Hemenway, 1978; Royer, 1981). Four experiments were conducted to examine capacity limits in different symmetry judgments. Observers were required to discriminate between random patterns and approximate symmetry (Experiments 1 and 3) or between perfect and approximate symmetry (Experiments 2 and 4). The patterns were divided into two sets of dots, presented either simultaneously or successively. A comparison of accuracy under these two presentation conditions suggested that symmetry detection involves an analysis that is spatially parallel but coarse, regardless of either task difficulty or task type (detecting symmetry vs. detecting asymmetry).     

Children do show negative priming: further evidence for early development of an intact selective control mechanism

Reactions to stimuli that were shortly before presented as distractors are usually slowed down; this phenomenon is known as negative priming. Negative priming is an accepted index for tapping into selective control mechanisms. Although this effect is well established for adults, it has been claimed that children do not show negative priming. Recently, however, V. E. Pritchard and E. Neumann challenged this view and concluded that selective control mechanisms are already fully developed in young children. The authors of the present study analyzed differences between older studies, in which no negative priming had been observed, and the Pritchard and Neumann (2004) study. In sum, the present study yielded further evidence for an intact selective control mechanism in young children. The authors also linked this empirical finding to the broader literature on negative priming by a direct comparison with an adult sample.     

Rapid recognition at 10 months as a predictor of language development

Infants' ability to recognize words in continuous speech is vital for building a vocabulary. We here examined the amount and type of exposure needed for 10-month-olds to recognize words. Infants first heard a word, either embedded within an utterance or in isolation, then recognition was assessed by comparing event-related potentials to this word versus a word that they had not heard directly before. Although all 10-month-olds showed recognition responses to words first heard in isolation, not all infants showed such responses to words they had first heard within an utterance. Those that did succeed in the latter, harder, task, however, understood more words and utterances when re-tested at 12 months, and understood more words and produced more words at 24 months, compared with those who had shown no such recognition response at 10 months. The ability to rapidly recognize the words in continuous utterances is clearly linked to future language development.     

Our Journey Ahead

This text is an edited version of a keynote address given in Paris on 12 March 2019 to a colloquium on “Justice and Justification” organized by the Institute for Advanced Studies in Ecumenism (ISEO, according to its acronym in French) to mark the 20th anniversary of the Joint Declaration on the Doctrine of Justification (JDDJ) between Catholics and Lutherans in 1999. The article explores the origins and the reception of the JDDJ, as well as the opportunities it offers for Christians of all denominations today. It goes on to remember the Joint Commemoration of the Reformation by Lutherans and Catholics in 2016 in Lund and Malmö, Sweden, and how this was influenced by the insights gained from the Lutheran–Mennonite dialogue. The address notes how since the signing of the Joint Declaration in 1999, three other Christian World Communions have joined the declaration and highlights various upcoming anniversaries, including the 500th anniversaries of the Diet of Worms in 2021, and of the Augsburg Confession in 2030.     

Pre-verbal infants perceive emotional facial expressions categorically

Adults perceive emotional expressions categorically, with discrimination being faster and more accurate between expressions from different emotion categories (i.e. blends with two different predominant emotions) than between two stimuli from the same category (i.e. blends with the same predominant emotion). The current study sought to test whether facial expressions of happiness and fear are perceived categorically by pre-verbal infants, using a new stimulus set that was shown to yield categorical perception in adult observers (Experiments 1 and 2). These stimuli were then used with 7-month-old infants (N = 34) using a habituation and visual preference paradigm (Experiment 3). Infants were first habituated to an expression of one emotion, then presented with the same expression paired with a novel expression either from the same emotion category or from a different emotion category. After habituation to fear, infants displayed a novelty preference for pairs of between-category expressions, but not within-category ones, showing categorical perception. However, infants showed no novelty preference when they were habituated to happiness. Our findings provide evidence for categorical perception of emotional expressions in pre-verbal infants, while the asymmetrical effect challenges the notion of a bias towards negative information in this age group.     

Heterosexual Attendance at Gay Events: The 2002 Parada Livre Festival in Porto Alegre,Brazil

This paper reports on a quantitative survey designed to characterize the public who attended Parada Livre 2002, a festival in Porto Alegre, Brazil organized around free sexual expression. Of particular interest was attendance at the event by heterosexual-identified individuals, a sub-population generally ignored in research to date on large-scale events of this sort. Questionnaires were completed by 176 Parada attendees. The questionnaires covered demographics, social movement participation, attitudes about HIV/AIDS and homosexuality, and motivations for attending the festival. Analysis gauged significant differences by gender and sexual orientation. Slightly more than half (52.1%) of the sample self-identified as heterosexual. Compared to attendees with non-normative sexual identities, heterosexuals were more likely to be women and less likely to be politically engaged in terms of social movement participation. Heterosexual attendees were slightly less gay-positive, but no less likely to know a lesbian, gay or travesti, or person with HIV/AIDS. Implications of study findings for scholarly understandings of cultural and political organization around sexual diversity in Brazil are discussed.

THE CATEGORY SCALE EQUATION

It has been claimed that the nearly logarithmic form of some category scales supports Fechner's law. However, by assuming that the concepts of similarity and difference are quantitatively complementary, it is possible to deduce the category scale equation from the similarity function. Thus, the category scale equation cannot be taken as evidence of the validity of Fechner's law.