A comparison of three methods of fitting the normal ogive

The Mueller-Urban method of fitting the normal ogive is derived, and the inadequacies of its inherent assumptions are discussed. This and the unweighted least squares method are compared to the maximum likelihood solution which is shown to be very close to the ideal least squares solution. As an empirical demonstration of the superiority of the maximum likelihood solution, random ogives are fitted by all three methods and they are compared on the basis of the expected values and the standard errors of the estimates. It is concluded that the maximum likelihood solution is uniformly superior to the others in all respects.This research was done under Contract Nonr-248(55) between the Office of Naval Research and The Johns Hopkins University. This is Report No. 18 under that contract. Reproduction in whole or in part is permitted for any purpose of the United States Government. This paper is part of a dissertation submitted to The Johns Hopkins University. Part of this work was done while the author was a National Institutes of Health Research Fellow.Now at The Biometric Laboratory, The George Washington University. The author is indebted to Dr. Wendell R. Garner for his valuable advice and encouragement, and to Jerome Cornfield for several helpful discussions.     

Gender,leadership style,and subordinate satisfaction: An experiment

As women continue to enter and advance within management ranks, how gender and leadership style influence subordinate satisfaction remains a significant issue. This paper reports on an experiment that analyzed the effects of gender and leadership style on subordinate satisfaction. While subjects were more satisfied in democratically led groups, gender of leader did not significantly affect satisfaction. Female subordinates were more dissatisfied than males in autocratically led groups.     

Using Cognitive Dissonance to Encourage Water Conservation1

In a field experiment on water conservation, we aroused dissonance in patrons of the campus recreation facility by making them feel hypocritical about their showering habits. Using a 2 × 2 factorial design, we manipulated subjects “‘mindfulness” that they had sometimes wasted water while showering, and then varied whether they made a “public commitment” urging other people to take shorter showers. The “hypocrisy” condition-in which subjects made the public commitment after being reminded of their past behavior-was expected to be dissonance-arousing, thereby motivating subjects to increase their efforts to conserve water. The results were consistent with this reasoning. Compared to controls, subjects in the hypocrisy condition took significantly shorter showers. Subjects who were merely reminded that they had wasted water, or who only made the public commitment, did not take shorter showers than control subjects. The findings have implications for using cognitive dissonance as means of changing behavior in applied settings, especially those in which people already support the desired goal, but their behavior is not consistent with those beliefs.     

Psychosocial development in adulthood: a 22-year sequential study.

Data supporting the notion of adult personality stability are challenged by the present findings, in which developmental change was demonstrated using the Eriksonian-stage-based Inventory of Psychosocial Development (IPD; Constantinople, 1969). A sequential design over the ages 20-42 was used on 2 cohorts of college students and alumni originally tested in 1966 and 1976-1977 (ns in 1988 = 99 and 83, respectively), and a 3rd cohort of college students in 1988-1989 (n = 292). Results of longitudinal, cross-sectional, and sequential analyses challenged ideas about personality stability, with evidence of increasingly favorable resolutions of the early Eriksonian psychosocial stages up through the oldest age studied. There was evidence of a trend over the past decade toward less favorable resolution of ego integrity versus despair. The findings were interpreted in terms of developmental change processes during the adult years interacting with culturally based environmental effects on psychosocial development.     

Adolescents' Possible Selves and Their Relationship to Global Self-Esteem

Recent research indicates that adolescent girls'self-esteem is lower than that of boys, and adolescence has been identified as a particularly problematic period for female self-esteem. However, many studies use global self-esteem measures that mask important differences within the domains of self-concept that contribute to self-esteem. Further, some self-esteem measures assess components of male self-esteem but overlook aspects of female self-esteem. The possible selves approach was used to identify categories of adolescent male and female self-concept that correlate with self-esteem. Subjects were 212 high-school students. The sample was primarily (96%)Caucasian. Results indicate that female self-esteem is related to perceived likelihood of hoped-for and feared possible selves in multiple domains, whereas male self-esteem is related only to the likelihood of one domain of hoped-for possible selves.     

Paying for medical care: a Jewish view

According to Jewish law, there is a clear obligation to try to heal, and this duty devolves upon both the physician and the society. Jewish sources make it clear that health care is not only an individual and familial responsibility, but also a communal one. This social aspect of health care manifests itself in Jewish law in two ways: first, no community is complete until it has the personnel (and, one assumes, the facilities) to provide health care; second, the community must pay for the health care of those who cannot afford it as part of its provision for the poor. The community, in turn, must use its resources wisely, which is the moral basis within the Jewish tradition for some system of managed care. The community must balance its commitment to provide health care with the provision of other services.     

THE FUNCTION OF FUTURE ORIENTATION AS A DETERMINANT OF HUMAN BEHAVIOR IN STEP-PATH THEORY OF ACTION

Step-path theory of action is used to conceptualize future orientation (FO) as anticipated path characteristics and to derive its function. Study 1 finds that stories written to FO sentences are significantly higher on n Achievement when referring to a young person, while stories written to past orientation sentences tend toward higher scores when referring to an old person. Study 2 finds that extremes on chronological age tend to accentuate these trends. Study 3 supports the “multiplicative rule” for the combination of subjective probabilities of success (Ps) along a contingent path for group data. Individual data show that the predicted accentuation of achievement motivation is mediated by a decrease in path length for nonmultipliers of Ps (time FO), and by an increase in path length for multipliers of Ps (task FO). Path Ps also influences the effects of time and task FO.