进化论视野中的符号自我

本文简要介绍了近 2 0年来西方进化论观心理学家对符号自我的概念、内容及功能所作的研究。这些研究认为 ,符号自我是一种适应 ,而且由于其高度的适应性意义 ,它还是一种被选择的、仅属于人类的、具有广阔基础的能力。符号自我不仅具有适应功能 ,而且还在人的心理生活中具有重要的作用     

Cramér‐von Mises regression

Consider a linear regression model with unknown regression parameters β₀ and independent errors of unknown distribution. Block the observations into q groups whose independent variables have a common value and measure the homogeneity of the blocks of residuals by a Cramér‐von Mises q‐sample statistic T_q(β). This statistic is designed so that its expected value as a function of the chosen regression parameter β has a minimum value of zero precisely at the true value β₀. The minimizer β of T_q(β) over all β is shown to be a consistent estimate of β₀. It is also shown that the bootstrap distribution of T_q(β₀) can be used to do a lack of fit test of the regression model and to construct a confidence region for β₀     

Approximations of Variances and Covariances for Order Statistics from the Standard Extreme Value Distribution

We consider simple approximations of variances and covariances for order statistics from the standard extreme value distribution. Exact values and simulation results of the variances and covariances for certain sample sizes are used to determine the validity of the suggested approximations.     

A review of nonparametric ranked-set sampling methodology

Ranked-set sampling is an alternative to random sampling for settings in which measurements are difficult or costly. Ranked-set sampling utilizes information gained without measurement to structure the eventual measured sample. This additional information yields improved properties for ranked-set sample procedures relative to their simple random sample counterparts. We review the available nonparametric procedures for data from ranked-set samples. Estimation of the distribution function was the first nonparametric setting to which ranked-set sampling methodology was applied. Since the first paper on the ranked-set sample empirical distribution function, the two-sample location setting, the sign test, and the signed-rank test have all been examined for ranked-set samples. In addition, estimation of the distribution function has been considered in a more general setting. We discuss the similarities and differences in the properties of the ranked-set sample procedures for the various settings     

Minimum variance unbiased estimation in a modified power series distribution and some of its applications

In this paper we study the minimum variance unbiased estimation in the modified power series distribution introduced by the author (1974a). Necessary and sufficient conditions for the existence of minimum variance unbiased estimate (MVUE) of the parameter based on sufficient statistics are obtained. These results are, then, applied to obtain MVUE of θ^r (r ≥ 1) for the generalized negative binomial and the decapitated generalized negative binomial distributions (Jain and Consul, 1971). Similar estimates are obtained for the generalized Poisson (Consul and Jain, 1973a) and the generalized logarithmic series distributions (Jain and Gupta, 1973). Several of the well-known results follow trivially from the results obtained here.     

对高校成立心理咨询机构若干问题的思考

高校成立心理咨询机构是时代的呼唤与学生的实际需要 ,意义十分重大。本文就高校成立心理机构的意义和任务做了思考 ,并在具体操作中提出“三步走”的看法。     

Index for Volume 32

Abstract

College students with insulin-dependent diabetes mellitus often ignore the care of their illness. Faced with managing this illness independently for the first time, they lack the knowledge and experience to do so effectively. Their need to establish autonomy often prevents them from seeking the advice of health professionals. In view of this, the author undertook a pilot study to investigate the role of a peer support group on a college campus as a means of improving the diabetic students' management of their illness.

Three closed-membership groups met for 10 weekly sessions. Hemoglobin A_1c (the measure of average blood sugar over the preceding 3-month interval) determinations prior to participation in the group ranged from 4.0 to 11.7, with a mean of 8.16; after participation in the group, the mean hemoglobin A_1c levels of group members dropped to 6.10 (p < .001). (Hemoglobin A_1c measures lower than 6.2 reflect physiologic blood sugar measures of someone without diabetes.)

These results suggest that the peer-group approach may be a viable way to improve the metabolic control of young adults with diabetes at the time in their lives when they are learning to manage their illness independently.     

Convergence of the moment generating function of standardized quantiles

A sequence of independent, identically distributed random variables is considered. Given a simple local condition on the distribution of these random variables, we give necessary and sufficient conditions on the tails of the distribution for the moment generating function of a standardized quantile of the first n observations to converge to the moment generating function of an appropriate normal distribution as n →infinity;. This result is actually a special case of a more general result which can also be used to show convergence in distribution and convergence of moments of standardized quantiles.     

Characterizations of Distributions Based on Moments of Residual Life

Let T be a random variable having an absolutely continuous distribution function. It is known that linearity of E(T | T > t) can be used to characterize distributions such as exponential, power and Pareto distribution. In this work, we will extend the above results. More precisely, we characterize the distribution of T by using certain relationships of conditional moments of T. Our results can also be used to obtain new characterization of distributions based on adjacent order statistics or record values.     

我国统计学人才培养模式比较研究

本文对国内统计学专业的人才培养目标和培养模式,课程体系设置等进行了比较,针对我国的统计学教育现状,从人才培养目标、专业课程教学方法、教学手段和实践教学等方面对我国高校统计学专业本科教育改革作了一些探讨.