Checking for errors in calculations and software: Dimensional balance and conformance of units

Although there has always been a general awareness that mathematical expressions must make dimensional sense in terms of the units involved, it is very easy to make simple mistakes in quantitative work that result in profound and potentially dangerous errors. Such errors are ubiquitous in modern research, as can be seen by reviewing government publications where dimensional errors persist despite peer and public review. Software methods have recently become available for checking calculations, equations, algorithms and programs for dimensional soundness. Correctness depends on conformance at two levels: balance of dimensions and agreement among units. Error at either level can now be detected automatically by software. Disagreement among units can even be automatically corrected by software procedures. These software tools can be used to check for errors in calculations and software source code in a way that is similar to using a spelling or grammar checker for text.     

Intentionality behind nonverbal messages: A perceiver's perspective

This paper examines the ways in which people decide whether or not a nonverbal message is intentional. It was predicted that judgments of intentionality would be biased by an interactant's desire to protect his or her self image. Participants (N=163) in the study went to banks and discussed new accounts with an employee. They were then asked by a confederate to discuss the nonverbal messages perceived to be sent by the employee. The results indicated that respondents reported messages accompanied by attributions of intent at a rate greater than chance. In addition, positively labeled nonverbal messages usually received interpretations of intentionality. Negative messages were viewed most often as unintentional. In those instances where negative messages were seen as intentional, participants said that the employee had strong external pressures to act in a negative manner.The authors wish to thank reviewers Michael Motley and Patricia Noller for their helpful comments on earlier versions of this paper.     

How well can we track cohabitation using the SIPP? A consideration of direct and inferred measures

Cohabitation is an alternative to marriage and to living independently for an increasing number of Americans. Still, research that explores links between living arrangements and economic behavior is limited by a lack of data that explicitly identify cohabiting couples. To aid researchers in using the Survey of Income and Program Participation's (SIPP) rich data to explore cohabitation issues, we consider direct and inferred measures of cohabitation. We find, first, that the use of inferred definitions (relative to direct measures) in the SIPP is likely to yield higher cohabitation rates in the United States by incorrectly coding roommates as cohabitors. Second, the SIPP (whether by direct or inferred measures) counts a significantly larger number of cohabiting couples than the widely used Current Population Survey (CPS). Third, spells of cohabitation occur less frequently and last longer when a direct measure of cohabitation is used than when either of the two inferred measures of cohabitation is used; ours is the first article to reveal this result.     

Attendance problems and disciplinary procedures in Nebraska schools

STUDY PURPOSE: School principals were surveyed in rural and urban Nebraska schools to compare policies and procedures on school attendance, and to contrast the use of disciplinary procedures for attendance, violence and substance abuse. METHODS: A survey was sent to a 50 percent random sample of Nebraska schools. Respondent school addresses in metropolitan statistical areas (MSA) areas were categorized as urban, and non-MSA respondents were classified as rural area schools. RESULTS: Of the 680 surveys mailed, 464 (68.2 percent) completed surveys were returned. Overall, 86.2 percent of respondents were from rural schools and 13.8 percent from urban schools. A list of disciplinary problems and procedures was reported for a first-time offense by rural and urban schools. Both an "occasional attendance problem" and a "chronic attendance problem" were most frequently addressed through parent contact in both urban and rural areas. For "fighting with another student," rural schools most commonly reported discipline by teacher, followed by discipline by principal and parent contact. In urban schools, discipline by principal was most common. For "using drugs other than alcohol or tobacco at school" in both areas, disciplinary procedures included parent contact and short-term suspension. A list of disciplinary problems and procedures was also reported for a second-time offense and third-time offense. For "fighting with another student," the most commonly reported procedure was discipline by principal and parent contact for a second-time offense, followed by short-term suspension and long-term suspension for a third-time offense. For "using drugs other than alcohol or tobacco at school," for a second time offense was long-term suspension and semester expulsion for a third-time offense. Principals were also asked in an open-response format, what program or procedures were currently in place to prevent violence in their school. Common responses were "conflict resolution training," followed by "the Boys Town social skills and behaviors model" and "a zero tolerance policy." CONCLUSIONS: School principals generally reported similar disciplinary actions for most disciplinary problems. For recurrent offenses and for serious problems, principals generally used tougher disciplinary procedures. Some of the discrepancies in disciplinary actions, however, suggest the need for consistent enforcement and communication of policies for both urban and rural schools.     

Attitudes To Marriage Among Young Tertiary–Educated Women

This study explores the attitudes to marriage and child-bearing held by women graduates born 1957–62. It is argued that this is a group of women for whom economic and cultural pressures to enter marriage are low, due to changes in social structures and the availability of a feminist philosophy that provides an alternative value system to patriarchy. With extrinsic pressures to marry so reduced, what factors determine the marriage and family decisions that they make? Interviews with a small sample of these women provide some strong pointers. Marriage at an appropriate age and to an appropriate partner was seen as providing substantially more benefits than costs. Delaying marriage until personal identity had been achieved was considered very important, with independent living, work and overseas travel contributing to identity formation. Supportiveness and egalitarianism were considered crucial qualities in a spouse, and those who were married had tended to marry men who were as or more ambitious for their wives than for themselves. An overall attitude of entitlement-with-organisation emerged. The increase in socioeconomic differences among women-in-their-own-right is discussed.     

‘The Bang’ and SNAP: Controversial Issues in Schools

Over the last few years there has been a series of ‘moral panics’ over the introduction of Peace Studies into educational institutions. This case study examines the recent public controversy over an educational play call The Bang presented in secondary schools in New South Wales, and the associated attacks on student interest groups called Students for Nuclear Awareness and Peace (SNAP). The case study raises questions about power relations in the social construction of ‘controversy’ and ‘objectivity’ and the strategic dilemmas these imply for progressive teaching about social issues in schools.