Behavioral control by stimulus components of an imprinting object

In the first of three experiments, ducklings that had received prolonged exposure to the visibly moving imprinting object subsequently suppressed ongoing distress vocalization both during brief presentations of the moving object and during brief presentations of its initially neutral stimulus components (i.e., its auditory and static visual features). Only presentations of the moving object were followed by priming aftereffects (namely, enhancement of distress vocalization over a baseline rate). In Experiment 2, weak, but reliable, priming effects were detected after very long presentations of the auditory and static visual features. Experiment 3 found that these features strongly suppressed low, but not high, rates of distress vocalization, while the visibly moving object strongly suppressed both high and low rates. These studies suggest that initially neutral features of an imprinting object acquire the same sort of behavioral control as is exerted by the object when it is in motion, but that this control is somewhat weaker.     

AGE DIFFERENCES IN EFFICIENCY OF READING COMPREHENSION FROM PRINTED VERSUS COMPUTER‐DISPLAYED TEXT

Computer technology has become a tremendous aid in examining the aging process as it relates to reading by allowing researchers to measure and control processing time. But is the computer a passive player in the study of reading and aging? Are we overlooking interactions between computers and participants using them? This study compared two types of computer presentation (investigator‐paced and self‐paced by the reader) to reading from the printed page. Older adults were most efficient in their reading comprehension when reading from the printed page, while young adults were most efficient from computer‐paced text. Although reading is a highly practiced skill for both young and old adults, the computer method of presentation is much less familiar to old adults. An overestimation of age differences with misleading findings may occur if computers are routinely used to study age differences in reading comprehension.     

Teachers and tolerance: Discriminating diversity dispositions

Abstract

Prevailing values of equity and social justice are increasingly espoused in the mission and policy statements of public institutions, organizations, and agencies. In higher education, teacher preparation programs are considered to be key contributors to the cultivation of mores of inclusiveness, where diversity is embraced and appreciated in its multitude of forms. The purpose of this qualitative study was to examine the diversity dispositions of a group of preservice and inservice teachers participating in a multicultural education course at a university in the deep southern region of the United States. Data were collected in the following ways: (a) autobiographical accounts that participants compiled and shared; (b) responses to abbreviated biographies in an online discussion forum; (c) face‐to‐face discussions of issues related to goals of equity, tolerance, and social justice in schools; and (d) instructor observations of participants' interactions with each other. The research revealed that in the electronic forum the teacher candidates and practicing teachers were particularly candid in reflecting upon and revealing their cultural roots, perceptions, and experiences and validated many—but not all—‐peer self‐reports of marginalization. Three major diversity dispositions emerged in the data analysis: (a) cultural consciousness, (b) intercultural sensitivity, and (c) commitment to social justice. The study also illuminated the challenge inherent in critically examining and sharing diversity dispositions when considering issues of discrimination, prejudice, and segregation in a multicultural setting. Although limited in scope and generalizibility, the findings provide insights into ways of framing tolerance sensibilities and for improving educators' capacities to reassess candidates' diversity dispositions.