Repeated postevent questioning can lead to elevated levels of eyewitness confidence

Two experiments tested the proposition that postevent questioning can lead to later increases in witness confidence without corresponding changes in witness accuracy. After a staged interruption in a college classroom, participants were questioned about the event 5 times over 5 weeks in Experiment 1 (n=57) and 3 times over 5 days in Experiment 2 (n=79). During the final questioning session, the participant-witnesses consistently reported higher levels of confidence for those items that had been subject to repeated postevent questioning than for those items that were asked for the first time, yet there was no difference in the accuracy of the responses to the two sets of items. Additionally, in all conditions the participant-witnesses were generally overconfident in their responses. These results suggest that repeated postevent questioning can cause eyewitnesses' subsequent confidence estimates to be artificially inflated.     

Herzl on discrimination in Der Judenstaat

Theodor Herzl published his programmatic book The Jewish State in February 1896. Central to it was the discrimination (and hatred) commonly known as anti-Semitism. Herzl viewed anti-Semitism as the heart of the Jewish Question but also as the potential motivator for Jews to achieve a Jewish state. Herzl's analysis of anti-Semitic discrimination is in many aspects similar to present sociological theories of middle-class minorities. His discussion of the economic aspects is compared with Gary Becker's theory of discrimination, and similarities as well as differences are pointed out.     

An in vitro study of the accuracy and precision of Breathalyzer models 900, 900A, and 1000

Ninety Breathalyzer instruments (Model 1000) and twenty instruments (Models 900, 900A) were studied using a protocol described by the Department of Transportation's "Standard for Devices to Measure Breath Alcohol." Although the mean of each of three concentrations tested (0.05, 0.10, and 0.15 g/210 L) compared favorably in both series, the standard deviation was consistently higher for the Model 1000 instruments. The Model 1000 instruments also produced a significant number of test results which exceeded the normally expected scientific deviation.