SELF-REINFORCEMENT EFFECTS: AN ARTIFACT OF SOCIAL STANDARD SETTING?

Two studies were conducted to identify mechanisms responsible for observed "self-reinforcement" effects. In Experiment 1, using a studying task, self-reinforcement procedures did not work when they were private (i.e., when others are not aware of the goals or contingencies), but did work when they were public. Self-delivery of consequences added nothing to the effectiveness of the procedure. The data suggested that public goal setting was the critical element in the procedure's effectiveness. In Experiment 2, an applied extension, goal setting alone was effective in modifying over a long time period studying behaviors of people with significant studying difficulties, but only when the goals were known to others. Overall, the two experiments make more plausible the view that self-reinforcement procedures work by setting a socially available standard against which performance can be evaluated. The procedure itself functions as a discriminative stimulus for stringent or lenient social contingencies. The application of this mechanism to other problems of applied significance is briefly discussed.     

Position of compression garment around the knee affects healthy adults’ knee joint position sense acuity

Athletes use compression garments (CGs) to improve sport performance, accelerate rehabilitation from knee injuries or to enhance joint position sense (JPS). The position of CGs around the knee may affect knee JPS but the data is inconsistent. The purpose of the present study was to determine the effects of CG position on healthy adults’ knee joint position sense acuity. In a counterbalanced, single-blinded study, 16 healthy young adults (8 female, age: 25.5 y) performed an active knee joint position-matching task with and without (CON) a below-knee (BK), above-knee (AK), or whole-knee (WK) CG in a randomized order on the dominant (CompDom) or the non-dominant leg (CompNon-Dom). We also determined the magnitude of tissue compression by measuring anatomical thigh and calf cross sectional area (CSA) in standing using magnetic resonance imaging (MRI). Subjects had less absolute repositioning error (magnitude of error) in BK compared with CON condition. On the other hand, the analysis of the direction of error (constant error) revealed that in each condition subjects tended to underestimate the target position (AK, BK and CON: 75%; WK: 94%). In WK condition there was a significantly larger negative error (−2.7 ± 3.4) as compared with CON (−1.6 ± 3.7) condition. There also was less variable error, in WK compared to BK and CON conditions, indicating less variability in their position sense using a WK CG, regardless of the underestimation. CG reduced thigh CSA by 4.5 cm² or 3% and calf CSA by Δ1.3 cm² or 1%. The position of CG relative to the knee modifies knee JPS. The findings helps us better understand how the application of a WK CG may support athletic activities.     

The Reverse Double Standard in Perceptions of Student-Teacher Sexual Relationships: The Role of Gender,Initiation, and Power

ABSTRACT

The present study tested the prediction that male teachers are judged more harshly than female teachers for engaging in heterosexual intercourse with a student. One-hundred and eighty-seven adults (116 women, 71 men) evaluated a hypothetical newspaper article describing an alleged student-teacher relationship as part of a 2 (Gender Dyad: Male Teacher/Female Student or Female Teacher/Male Student) × 2 (Initiator: Student or Teacher) between-subjects design. As expected, a reverse sexual double standard was revealed, in which participants judged situations involving male teachers more harshly than they judged situations involving female teachers, but only when the sexual contact was teacher-initiated. Participants also believed that male students received more social benefits from the sexual contact than did female students.     

认知诊断模型的标准误与置信区间估计：并行自助法

认知诊断模型的标准误(Standard Error, SE; 或方差—协方差矩阵)与置信区间(Confidence Interval, CI)在模型参数估计不确定性的度量、项目功能差异检验、项目水平上的模型比较、Q矩阵检验以及探索属性层级关系等领域有重要的理论与实践价值。本研究提出了两种新的SE和CI计算方法：并行参数化自助法和并行非参数化自助法。模拟研究发现：模型完全正确设定时, 在高质量及中等质量项目条件下, 这两种方法在计算模型参数的SE和CI时均有好的表现; 模型参数存在冗余时, 在高质量及中等质量项目条件下, 对于大部分允许存在的模型参数而言, 其SE和CI有好的表现。通过实证数据展示了新方法的价值及计算效率提升效果。     

Platonic Knowledge and the Standard Analysis

Abstract

In this paper I explore Plato’s reasons for his rejection of the so‐called standard analysis of knowledge as justified true belief. I argue that Plato held that knowledge is an infallible mental state in which (a) the knowable is present in the knower and (b) the knower is aware of this presence. Accordingly, knowledge (epistēmē) is non‐propositional. Since there are no infallible belief states, the standard analysis, which assumes that knowledge is a type of belief, cannot be correct. In addition, I argue that Plato held that belief (doxa) is only possible for the sort of being capable of knowledge. This is because self‐reflexivity is necessary for infallible knowledge and self‐reflexivity is only possible if the intellect is immaterial. This capacity for self‐reflexivity is also essential for belief, since beliefs are, paradigmatically, not dispositions but self‐reflexive mental states.     

肿瘤组织库规范化操作程序的探讨

肿瘤组织是人类直接探讨肿瘤发生、发展和转移机制的研究对象,建立肿瘤组织库(tumor tissue bank,TTB),使用一套规范化操作程序(standard operating procedures,SOPs)来收集高质量的组织标本,避免其浪费势在必行。规范化TTB的建设也将涉及TTB的信息化管理及通用数据元素(common data elements,CDEs)的开发。深入探讨这些方面将有助于我国科研机构建立起自己标准化的TTB。     

A critique of Vihvelin's Three-fold Classification

In this essay, I argue for the rejection of Vihvelin's ‘Three-fold Classification’ (3-FC), a nonstandard taxonomy of free-will compatibilism, incompatibilism, and impossibilism. Vihvelin is right that the standard taxonomy of these views is inadequate, and that a new taxonomy is needed to clarify the free-will debate. Significantly, Vihvelin notes that the standard formal definition of ‘incompatibilism’ does not capture the historically popular view that deterministic laws pose a threat to free will. Vihvelin's proposed solution is to redefine ‘incompatibilism.’ However, Vihvelin's formal definition of ‘incompatibilism’ is flawed according to her own arguments. In addition, Vihvelin's characterization of ‘compatibilism’ is (at best) incomplete, and at least two important free-will views are missing from her proposed taxonomy. Given the problems with Vihvelin's arguments for 3-FC, her novel view of the dialectic between the major free-will views lacks support.