Attitudes of parents towards the pre‐marital sex behavior of their children and themselves

The purpose of the experiment was to examine the acquisition of information about sexuality by 182 ninth‐grade students enrolled in a sex education course. An additional 197 ninth‐grade students in the same school served as a control group. Approximately half the subjects in each group were pretested. Following completion of the course, all subjects were posttested. The major results of the multiple regression analysis indicated that the experimental group scored higher on the posttest than the control group both for the total set of items (N = 24) and for several subscores measuring learning of sex education material. The pretest and posttest scores did not differ for control group subjects. The results indicated: (a) sex education courses can provide important information about sexuality which is not gained in other ways by ninth‐graders; (b) peers may not be important sources of sexual information when alternatives (sex education courses) to peer information are available.     

Casino self‐exclusion programmes: A review of the issues 1

Abstract

Casino self‐exclusion is a procedure by which individuals can have themselves banned from entering a casino. One of the purposes of this paper is to present information about the availability and features of these programmes. A second purpose is to make recommendations about how to best operate them based on cross‐jurisdictional analysis and lessons from the addiction literature. The first section of the paper describes the typical casino self‐exclusion programme, outlining the features common to most policies. The second section provides a detailed overview of the programmes operating in Canada in order to give the reader an appreciation of the procedural variations that exist. The third section discusses the effectiveness of self‐exclusion programmes. Finally, the fourth section contains recommendations on ways to improve effectiveness. When properly implemented, self‐exclusion can be a valuable tool in helping to curb problem gambling.     

A Sample Size Formula for a Non-Central t Test

An elementary method of proof of the mode, median, and mean inequality is given for skewed, unimodal distributions of continuous random variables. A proof of the inequality for the gamma, F, and beta random variables is sketched.     

Editor's Report

There are two common methods for statistical inference on 2 × 2 contingency tables. One is the widely taught Pearson chi-square test, which uses the well-known χ²statistic. The chi-square test is appropriate for large sample inference, and it is equivalent to the Z-test that uses the difference between the two sample proportions for the 2 × 2 case. Another method is Fisher’s exact test, which evaluates the likelihood of each table with the same marginal totals. This article mathematically justifies that these two methods for determining extreme do not completely agree with each other. Our analysis obtains one-sided and two-sided conditions under which a disagreement in determining extreme between the two tests could occur. We also address the question whether or not their discrepancy in determining extreme would make them draw different conclusions when testing homogeneity or independence. Our examination of the two tests casts light on which test should be trusted when the two tests draw different conclusions.