Comparing statistical learning across perceptual modalities in infancy: An investigation of underlying learning mechanism(s)

Statistical learning (SL), sensitivity to probabilistic regularities in sensory input, has been widely implicated in cognitive and perceptual development. Little is known, however, about the underlying mechanisms of SL and whether they undergo developmental change. One way to approach these questions is to compare SL across perceptual modalities. While a decade of research has compared auditory and visual SL in adults, we present the first direct comparison of visual and auditory SL in infants (8–10 months). Learning was evidenced in both perceptual modalities but with opposite directions of preference: Infants in the auditory condition displayed a novelty preference, while infants in the visual condition showed a familiarity preference. Interpreting these results within the Hunter and Ames model (1988), where familiarity preferences reflect a weaker stage of encoding than novelty preferences, we conclude that there is weaker learning in the visual modality than the auditory modality for this age. In addition, we found evidence of different developmental trajectories across modalities: Auditory SL increased while visual SL did not change for this age range. The results suggest that SL is not an abstract, amodal ability; for the types of stimuli and statistics tested, we find that auditory SL precedes the development of visual SL and is consistent with recent work comparing SL across modalities in older children.     

Principia genetica grundbegriffe und grundtatsachen der vererbungswissenschaft

Ohne Zusammenfassung     

Handling Anomalous Data in the Lab: Students’ Perspectives on Deleting and Discarding

Science and Engineering Ethics - This paper presents and discusses empirical results from a survey about the research practice of Danish chemistry students, with a main focus on the question of...     

Meaningfulness Beats Frequency in Multiword Chunk Processing

Whereas a growing bulk of work has demonstrated that both adults and children are sensitive to frequently occurring word sequences, little is known about the potential role of meaning in the processing of such multiword chunks. Here, we take a first step toward assessing the contribution of meaningfulness in the processing of multiword sequences, using items that varied in chunk meaningfulness. In a phrasal-decision study, we compared reaction times for triads of three-word sequences, corresponding to idiomatic expressions, compositional phrases, and phrasal fragments, while controlling for phrase and substring frequencies. Chunk meaningfulness, as assessed by a separate subjective rating study, was found to speed up decision times for all three types of strings: The more meaningful a multiword sequence was judged to be, the faster it was processed, independently of whether it was idiomatic, compositional in nature, or a phrasal fragment. These results highlight the importance of taking meaning into account when considering the processing of multiword chunks, consistent with predictions of construction-based approaches to language.     

CLIENT PREFERENCE FOR COUNSELOR GENDER

This article presents the results of an investigation of male and female clients' expressed preferences for gender of their counselor. The study addressed two major comparisons: clients with a preference for therapist gender versus those without a preference, and clients with a preference for a male therapist versus those with a preference for a female therapist. LOGIT analyses indicate significant relationships among sex of the client, sex of the intake counselor, whether or not clients express a preference, and whether they express a preference for a male or female counselor. Results also suggest an influence of the sex of the intake counselor. Results are discussed in terms of their implications for counseling and research activities.