A Longitudinal Investigation of Conflict and Delay Inhibitory Control in Toddlers and Preschoolers

Research Findings: A total of 81 children participated in a longitudinal investigation of inhibitory control (IC) from 2 to 4 years of age. Child IC was measured via maternal report and laboratory measures under conditions of conflict and delay. Performance on delay IC tasks at 3 years was related to performance on these same tasks at 2 and 4 years, but performance on conflict IC tasks was not related over time. Delay IC task performance was concurrently related to conflict IC task performance in 3- and 4-year-olds but was not related in 2-year-olds. Measures of IC varied in their associations with measures of verbal ability and maternal-report IC. Such findings highlight important similarities and distinctions between conflict and delay IC abilities in their relation to one another and to temperament and language over time. Practice or Policy: Studies of IC and related concepts reveal that children who are regulated enjoy school more and have higher school competence, particularly in mathematics and reading achievement. Because conflict IC and delay IC show unique patterns of development over time, educators can expect classroom behaviors drawing on the state-like conflict IC to show more fluctuation over time than those drawing on the trait-like delay IC.     

Web site credibility: Why do people believe what they believe?

This research investigates university students’ determinations of credibility of information on Web sites, confidence in their determinations, and perceptions of Web site authors’ vested interests. In Study 1, university-level computer science and education students selected Web sites determined to be credible and Web sites that exemplified misrepresentations. Categorization of Web site credibility determinations indicated that the most frequently provided reasons associated with high credibility included information focus or relevance, educational focus, and name recognition. Reasons for knowing a Web site’s content is wrong included lack of corroboration with other information, information focus and bias. Vested interests associated with commercial Web sites were regarded with distrust and vested interests of educational Web sites were not. In Study 2, credibility determinations of university students enrolled in computer science courses were examined for 3 provided Web sites dealing with the same computer science topic. Reasons for determining Web site inaccuracy included own expertise, information corroboration, information design and bias. As in Study 1, commercial vested interests were negatively regarded in contrast to educational interests. Instructional implications and suggestions for further research are discussed. Preliminary results from Study 1 were presented as a poster entitled “Users’ Confidence Levels and Strategies for Determining Web Site Veracity” (Iding et al. 2002a) and appeared in associated proceedings for The WWW 2002: The Eleventh International World Wide Web Conference, in Honolulu, Hawaii. Preliminary results from Study 2 were presented as a paper entitled, “Judging the Veracity of Web Sites” (Crosby et al. 2002) and appeared in associated proceedings for the International Conference on Computers in Education (ICCE 2002) in Auckland, New Zealand.     

Public schools,private schools,and the common school ideal

According to the ethos of the nineteenth century common school, all students are assigned the same tasks, and in all the same powers developed. Twentieth century innovations such as ability grouping are foreign to the common school's egalitarian ideal. Such innovations may reinforce connections between students' ascribed background characteristics and school achievement. Proponents of the common school sought to sever these connections. Coleman, Hoffer, and Kilgore, inHigh School Achievement (1982), argue that private schools are more in keeping with the common school tradition than public schools. In their view, private schools offer greater meritocratic justice than public schools; this is due to the fact that private schools minimize the impact of students' background characteristics, such as race and family income, on achievement. Our findings, however, are inconsistent with those of Coleman et al. We use a data set provided by the Educational Testing Service in which public and private subgroups are approximately equal with respect to measured background factors, and we employ a more adequate complement of independent variables, along with outcome measures which appear to be more curriculum sensitive than those employed by Coleman et al. Our regression results indicate that private secondary schools are no more effective than public schools at severing the connections between background characteristics and measured achievement in English, math, and American history.