The purpose of the present study was to investigate the role of phonological encoding in the silent speech of persons who stutter (PWS) and persons who do not stutter (PNS). Participants were 10 PWS (M=30.4 years, S.D.=7.8), matched in age, gender, and handedness with 11 PNS (M=30.1 years, S.D.=7.8). Each participant performed five tasks: a…

The synthesis for CdSe quantum dot nanocrystals that vary in color and are a visually engaging way to demonstrate quantum effects in chemistry is presented. CdSe nanocrystals are synthesized from CdO and elemental Se using a kinetic growth method where particle size depends on reaction time.

The need to make trainee teachers more prepared to coach collaborative learning effectively is increasing, as collaborative learning is becoming more important. One complication in this training process is that it is hard for the teacher trainer to hear and understand the students' utterances and those of the coaching trainee teacher. Besides, it…

How do people spell the thousands of words at the tips of their tongues? Are words with "regular" sound-to-letter correspondences (e.g., "blink") spelled using the same neural systems as those with "irregular" correspondences (e.g., "yacht")? By offering novel neuroimaging evidence, we aim to advance contemporary debate about whether people use a…

Feedback is one of the most powerful influences on learning and achievement, but this impact can be either positive or negative. Its power is frequently mentioned in articles about learning and teaching, but surprisingly few recent studies have systematically investigated its meaning. This article provides a conceptual analysis of feedback and…

A series of 8 tests was administered to university students over 4 weeks for program assessment purposes. The stakes of these tests were low for students; they received course points based on test completion, not test performance. Tests were administered in a counterbalanced order across 2 administrations. Response time effort, a measure of the…

As computer-mediated communication becomes increasingly prevalent in the workplace, students need to apply effective writing principles to today's technologies. Email, in particular, requires interns and new hires to manage incoming messages, use an appropriate tone, and craft clear, concise messages. In addition, with instant messaging (IM)…

The goal of this study was to examine incidental and intentional spatial sequence learning during middle childhood and adolescence. We tested four age groups (8-10 years, 11-13 years, 14-17 years, and young adults [18+ years]) on a serial reaction time task and used manual and oculomotor measures to examine incidental sequence learning.…

This study presents a dynamic systems model that suggests that social behavior emerges from the self-organization of cognition-emotion relationships and becomes stable through a process of positive feedback and coupling of components over time. Five 10- to 12-year-old children identified as anxious in evaluative situations by their teacher were…

Subjects learned 24 words from two categories to either a lenient or a stringent criterion and were then tested in an identification task. (Editor)

The experiments reported here attempted to examine the processing demands during a directed forgetting operation and to permit a comparison between pupillary response and secondary task performance as indexes of information processing. (Author/RK)

The secondary task method is utilized to assess cognitive capacity usage during, and immediately following, interspersed mathemagenic questions of different levels. The method also assesses the relationship between this usage and prose material recalled or recognized from differing positions and different types. The experiment involved 120…

Simple and complex addition problems were presented for true/false verification to 30 undergraduate students to test a general model for cognitive addition. Problems were presented on a microcomputer, with reaction time (RT) and response accuracy recorded. Models for addition were fit to average RT data using multiple regression techniques. These…

Research has demonstrated the occurrence of two structurally distinct modes of vocalization in the infant/mother pair--coaction and alternation--that change developmentally over the first year of the infant's life. The present study investigated the vocalization latencies of three infant/mother pairs at three stages of infant development: at 10…