Maintains that Madole and Oakes' hypotheses are incorrect. Shows that conceptual development frequently goes from the abstract to the concrete and that extensive literature shows that there is more than one kind of categorization. Discusses ways in which perceptual and conceptual categorization differ. (Author/KB)

Criticizes the account of observation given by Alan Chalmers in "What Is This Thing Called Science?" and provides an alternative based on direct realist approaches to perception. Contains 15 references. (Author/WRM)

Three experiments investigated whether 4-month-olds would attend to and utilize the global configuration ("good form") of a partly occluded, moving object to perceive its unit and coherence behind the occluder. Results indicated that curvature per se provided information in support of completion, in addition to global configuration and…

Examined toddlers' awareness of partners' knowledge states when communicating with them. In two studies, the parent either witnessed or did not witness placement of an object the child asked for help in retrieving. Subjects named the object and location and gestured to its location more often for parents who did not know the information than for…

Examined visual search for compound patterns in 6-, 8-, 10-, and 22-year-olds. Found large improvements with age in search rate for long-range targets; search rate for short-range targets was fairly constant across age. This pattern held regardless of ease of perceptual access to target, supporting the hypothesis of different processes involved at…

Investigated 4- and 7-month-olds' perception of transparency, using computer-generated achromatic or color displays depicting a semitransparent box occluding the center of a rod. Found that 4-month-olds indicated perception of transparency in color but not in achromatic displays. Seven-month-olds showed some evidence of transparency perception in…

Examined the nature of numerical knowledge in 5-month-olds to inform the debate whether numerical abilities result from capacities dedicated to numerical cognition or to more general perceptual capacities. Found that 5-month-olds could determine the number of collective entities, moving groups of items, when non-numerical perceptual factors such…

Used event-related potentials to novel and primed upright and inverted faces to examine evidence of repetition priming in 6-month-olds. Found that repeated faces demonstrated greater negativity than novel faces, and upright faces demonstrated greater negativity than inverted faces. Comparisons with adults tested in a similar experiment support the…

We investigated how different psychophysical procedures affect frequency discrimination performance in children. Four studies used a design in which listeners heard two tone pairs and had to identify whether the first or second pair contained a higher frequency target tone. Thresholds for 6-and 7-year-olds were higher than those for 8- and…

The article describes a case study of children and young people's participation and the attendant effects on professional practice and child-adult relations. The authors consider the findings under four headings: professional learning, child-adult relations, childhood memories and the spatial dimensions of change. Evidence indicates that adults…

This study investigated the ability to describe and categorize common objects following brain injury. Thirteen subjects with moderate to severe traumatic brain injury (TBI) and 13 noninjured controls participated in this project. The project consisted of 3 parts: 1. A spontaneous condition, 2. A training session, and 3. An application condition.…

A preference to novelty paradigm used to study human infants (Quinn, 2002) examined attention to novel animal pictures at subordinate, basic and superordinate levels in tamarins. First, pairs of pictures were presented in phases, starting with a monkey species (subordinate level) and ending with mammal and dinosaur sets (superordinate levels).…

This inquiry uses teacher-candidate critiques of science lessons as a means of evaluating the effectiveness of an instructor's pedagogical approach to promote teacher candidate understanding of the nature of science (NOS) in a science methods course. Three cohorts of teacher candidates enrolled in a middle-years teacher education program were…

Over half the world's population speaks a tone language, yet infant speech perception research has typically focused on consonants and vowels. Very young infants can discriminate a wide range of native and nonnative consonants and vowels, and then in a process of "perceptual reorganization" over the 1st year, discrimination of most…

As human beings, we can interact with our environment through the sense of touch, which helps us to build an understanding of objects and events. The implications of touch for cognition are recognized by many educators who advocate the use of "hands-on" instruction. But is it possible to know something more completely by touching it? Does touch…