Ringing the changes: In tribute to Arthur R. Peacocke1

Justin Barrett's consideration of some challenges for religious belief raised by evolutionary and cognitive theories of religion was criticized by Howard Van Till for overstating tensions, mischaracterizing the most important epistemological issues, and proposing a solution that perpetuates war on evolution. We argue that each of these claims is untrue, and is not conducive to dialogue that constructively engages and attempts to resolve tensions between science and religion where they do exist.     

Do Dynamic Facial Expressions Convey Emotions to Children Better Than Do Static Ones?

Past research has shown that children recognize emotions from facial expressions poorly and improve only gradually with age, but the stimuli in such studies have been static faces. Because dynamic faces include more information, it may well be that children more readily recognize emotions from dynamic facial expressions. The current study of children (N = 64, aged 5–10 years old) who freely labeled the emotion conveyed by static and dynamic facial expressions found no advantage of dynamic over static expressions; in fact, reliable differences favored static expressions. An alternative explanation of gradual improvement with age is that children's emotional categories change during development from a small number of broad emotion categories to a larger number of narrower categories—a pattern found here with both static and dynamic expressions.     

The within-subjects design in the study of facial expressions

The common within-subjects design of studies on the recognition of emotion from facial expressions allows the judgement of one face to be influenced by previous faces, thus introducing the potential for artefacts. The present study (N=344) showed that the canonical “disgust face” was judged as disgusted, provided that the preceding set of faces included “anger expressions”, but was judged as angry when the preceding set of faces excluded anger but instead included persons who looked sad or about to be sick. Chinese observers showed lower recognition of the “disgust face” than did American observers. Chinese observers also showed lower recognition of the “fear face” when responding in Chinese than in English.     

Brief Report- Adults' Freely Produced Emotion Labels for Babies' Spontaneous Facial Expressions

English-speaking Canadian, Cantonese-speaking Hong Kong Chinese, and Japanese speaking Japanese adults were shown 13 still photographs of the facial expressions of Chinese babies subjected to various emotion-elicitation procedures. Some respondents were asked to give an emotion label of their choice for each photograph, others to judge its pleasant-unpleasant quality. Only facial expressions taken during the “happy”; condition showed agreement by a majority across all three cultural samples on a specific basic emotion. Agreement on the pleasant-unpleasant quality of the baby's expressions was higher, but still varied with culture.     

The ghost condition: imitation versus emulation in young children's observational learning

Although observational learning by children may occur through imitating a modeler's actions, it can also occur through learning about an object's dynamic affordances--a process that M. Tomasello (1996) calls "emulation." The relative contributions of imitation and emulation within observational learning were examined in a study with 14- to 26-month-old children. The effectiveness of a "ghost" condition, in which the effective operation of the means apparatus was seen to occur without human agency, was compared with that of a standard modeling procedure in which the child saw an experimenter demonstrate the means action. The ghost condition was as likely to encourage observational learning as was the modeling condition; indeed, performance in the ghost condition was significantly better. The role of emulation in the development of observational learning is discussed in the context of a possible form of goal directedness without agency.     

Temporal learning in random control procedures

Experiments 1 and 2 delivered conditioned stimuli (CSs) at random times and unconditioned stimuli (USs) at either fixed (Experiment 1) or random (Experiment 2) intervals. In Experiment 3, CS duration was manipulated, and US deliveries occurred at random during the background. In all 3 experiments, the mean rate of responding (head entries into the food cup) in the background was determined by the mean US-US interval, and the mean rate during the CS was a linear combination of responding controlled by the mean US-US and mean CS onset-US intervals; the pattern of responding in time was determined by the interval distribution form (fixed or random). An event-based timing account, Packet theory, provided an explanation of the results.     

Reliability of laterality effects in a dichotic listening task with words and syllables

Large and reliable laterality effects have been found using a dichotic target detection task in a recent experiment using word stimuli pronounced with an emotional component. The present study tested the hypothesis that the magnitude and reliability of the laterality effects would increase with the removal of the emotional component and variations in word frequency. Thirty-two participants completed both a dichotic syllable detection task and a dichotic word detection task. In both tasks, stimuli were pronounced in a neutral tone of voice. Each task was completed twice to allow the estimation of test-retest reliability. Results failed to confirm the hypothesis since they were generally similar to those obtained in the previous study. A significant right ear advantage (REA) was found only with the word task. Although no ear advantage was found for the syllable task, somewhat better reliability was demonstrated compared to that obtained with words. The present findings suggest that including an emotional component does not reduce the reliability or magnitude of auditory laterality effects. In fact, the emotional component may have forced participants to focus on the language aspects of the stimuli. This might partly account for the reduced reliability in words and the absence of REA in syllables. Motivational factors inherent to the within-subject design used here are also discussed.