A closer look at the effect of preliminary goodness-of-fit testing for normality for the one-sample t-test

Student's one-sample t-test is a commonly used method when inference about the population mean is made. As advocated in textbooks and articles, the assumption of normality is often checked by a preliminary goodness-of-fit (GOF) test. In a paper recently published by Schucany and Ng it was shown that, for the uniform distribution, screening of samples by a pretest for normality leads to a more conservative conditional Type I error rate than application of the one-sample t-test without preliminary GOF test. In contrast, for the exponential distribution, the conditional level is even more elevated than the Type I error rate of the t-test without pretest. We examine the reasons behind these characteristics. In a simulation study, samples drawn from the exponential, lognormal, uniform, Student's t-distribution with 2 degrees of freedom (t(2) ) and the standard normal distribution that had passed normality screening, as well as the ingredients of the test statistics calculated from these samples, are investigated. For non-normal distributions, we found that preliminary testing for normality may change the distribution of means and standard deviations of the selected samples as well as the correlation between them (if the underlying distribution is non-symmetric), thus leading to altered distributions of the resulting test statistics. It is shown that for skewed distributions the excess in Type I error rate may be even more pronounced when testing one-sided hypotheses.     

New and updated tests of print exposure and reading abilities in college students

The relationship between print exposure and measures of reading skill was examined in college students (N = 99, 58 female; mean age = 20.3 years). Print exposure was measured with several new self-reports of reading and writing habits, as well as updated versions of the Author Recognition Test and the Magazine Recognition Test (Stanovich & West, 1989). Participants completed a sentence comprehension task with syntactically complex sentences, and reading times and comprehension accuracy were measured. An additional measure of reading skill was provided by participants' scores on the verbal portions of the ACT, a standardized achievement test. Higher levels of print exposure were associated with higher sentence processing abilities and superior verbal ACT performance. The relative merits of different print exposure assessments are discussed.     

The role of relative deprivation in majority-culture support for multiculturalism

In this paper, we investigate majority-culture attitudes to multicultural policy in Australia. Drawing on relative deprivation (RD) theory, we explore whether resistance to multicultural policies and initiatives is related to individual and/or group-based grievance claims of discrimination. To assess RD, we asked 517 Australian-born people who identified as White Australians to rate (a) levels of discrimination toward their own group, toward themselves personally as a consequence of their group membership, and toward immigrants to Australia, and (b) feelings of injustice and anger associated with such discrimination. Our findings show that, while perceptions of discrimination toward majority-culture Australians are commonplace, perceptions of discrimination toward immigrants are more so. We also found that higher ratings of group-based RD of Australians relative to immigrants, but not individual deprivation relative to immigrants, predicted opposition to multicultural policies and initiatives. Moreover, perceived group-based RD mediated the link between national identification and opposition to multicultural policies. The findings highlight, for the first time, the importance of group-based grievance claims by majority-culture members in opposing or supporting multicultural policy.     

Hidden presence: race and/in the history,construct, and study of western esotericism

ABSTRACT

Except for a few studies that explore the intersections between esoteric ideas/practices and white supremacy, race has largely been ignored in the field of Western esotericism. This article seeks to partake in remedying this lacuna. To do so, it provides a deconstructive analysis of the way race has operated in the field. I argue that race, although consistently overlooked, has functioned as a ‘hidden presence’ that has shaped both the historical formation of the field and the construct of Western esotericism – so much so, in fact, that we may conceive it as a subtext in and for the dominant ‘grand narrative’ of Western esotericism. In conclusion, I investigate recent attempts to omit ‘Western’ as a definitive adjective in the study of esotericism, thereby proposing that, even as we move ‘beyond the West,’ we must also continue to investigate the entanglements of ‘Western’ and whiteness.     

Developing the Individual: Life Skills and Family Therapy

Two bodies of literature on life skills and on family therapy have developed from different sources but have interesting similarities. Life skills comes from training and educational thinking, and concentrates upon the skills of and strategies for coping. Family therapy focuses upon the disturbance of an individual as symbolic of the dynamics of the family, but has at its roots a more-or-less explicit model of what constitutes an effective family, where the interactions can be readily understood in life-skill terms. The two approaches are compared and contrasted.     

Perceived mattering in stepfamilies: A social relations model analysis

The current study examined the respective role of stepfamily members' individual characteristics and their dyadic relationships in stepfamily members' perceptions of mattering to one another. Parents, stepparents, and adolescents from 86 stepfamilies participated. Applying social relations model analyses, several trends emerged regarding the relative importance of individual and dyadic factors. Parents' and adolescents' reports of mattering to one another were mainly driven by individual factors, whereas relational factors were important to understand the reports of mattering in which the stepparent was one of the dyad members. These findings contribute to stepfamily research by highlighting that stepfamily members' sense of belonging is at least partly a function of the interpersonal adaptation between the stepparent and other family members.     

Hemispheric competence and perceptual confusability

Hemispheric competence in performing easy and difficult letter classification was examined in an exact replication of a previous experiment by Jonides (1979). The present experiment failed to confirm Jonides's finding of right visual field advantage in conditions of perceptual confusability and left visual field superiority when the stimuli were easily discriminable. The results showed a trend in the opposite direction, but no significant interaction. This divergence is discussed with respect to existing evidence and methodological procedures.     

Examining the Role of Carbon Capture and Storage Through an Ethical Lens

The risk posed by anthropogenic climate change is generally accepted, and the challenge we face to reduce greenhouse gas (GHG) emissions to a tolerable limit cannot be underestimated. Reducing GHG emissions can be achieved either by producing less GHG to begin with or by emitting less GHG into the atmosphere. One carbon mitigation technology with large potential for capturing carbon dioxide at the point source of emissions is carbon capture and storage (CCS). However, the merits of CCS have been questioned, both on practical and ethical grounds. While the practical concerns have already received substantial attention, the ethical concerns still demand further consideration. This article aims to respond to this deficit by reviewing the critical ethical challenges raised by CCS as a possible tool in a climate mitigation strategy and argues that the urgency stemming from climate change underpins many of the concerns raised by CCS.