Factors which Improve the Construct Validity of Assessment Centers: A Review

This article reviews 21 studies which manipulated specific variables to determine their impact on the construct validity of assessment centers. This review shows that the studies regarding the impact of different observation, evaluation, and integration procedures yielded mixed results. Conversely, dimension factors (number, conceptual distinctiveness, and transparency), assessor factors (type of assessor and type of assessor training), and exercise factors (exercise form and use of role-players) were found to moderate construct validity. On the basis of the review, practical recommendations are derived to maximize the probability that practitioners design and administer an assessment center with construct validity. Finally, new perspectives for future research are identified.     

Assessing Leadership Potential with a Biographical Measure of Personality Traits

The aim of this study was to demonstrate the feasibility of biographical inventories free of the limitations common to many current biographical measures by constructing and validating an inventory composed of homogeneous scales, with item content that is factual and fair, to assess personality traits predictive of leadership. The experimental inventory, with tentative scales for Dominance, Emotional Stability, Need for Achievement, Self-Confidence, and Sociability, was administered to incoming midshipmen at the US Naval Academy and item analyzed. The validity of the final scales was appraised against subsequent peer ratings of the traits and of leadership shortly after entering the Academy; military performance grades, and midshipman rank and leadership position at the Academy; and recommendations for promotion after graduating and serving as an officer. The Sociability, Dominance, and Need for Achievement scales demonstrated convergent and discriminant validity, and all of the scales except Self-Confidence correlated with the leadership criteria. The Sociability scale’s consistent correlations with several of the leadership criteria, including a nontrivial correlation (r = 0.28) with the leadership peer rating, implies that this measure may be useful in assessing leadership potential.     

Book Reviews

John T. Haworth Work, Leisure and Well-being Owen Hargie The Handbook of Communication Skills Richard Lepsinger and Anntoinette D. Lucia The Art and Science of 360° Feedback Kevin Murphy Individual differences and behavior in organizations     

汉字材料的性质对视觉短时记忆广度影响的实验研究

汉字材料的熟悉性和复杂性对视觉短时记忆（ＶＳＴＭ）广度的影响研究存在分析。本研究在实验设计上区分了汉语字词的熟悉性和复杂性维度,探讨了它们对ＶＳＴＭ广义的不同影响程度,结果表明：（１）材料的熟悉性是影响汉语字词ＶＳＴＭ广度的最重要因素,材料的复杂性影响不大;（２）在材料熟悉程度一致,被试在１１－２０岁年龄范围条件下,汉语字词ＶＳＴＭ广义将保持相对恒定（３）在承认“组块假说”的前提,汉语字词ＶＳＴＭ     

TRAINING PEERS TO TUTOR: EVALUATION OF A TUTOR TRAINING PACKAGE FOR PRIMARY LEARNING DISABLED STUDENTS

Peer tutoring—academic instruction given by a student to a same-aged classmate—can be a cost-effective way of providing needed instruction in the typical classroom where one teacher must deal with many students of varying ability levels. This study evaluated an instructional package as a training method for increasing the use of selected tutoring behaviors by peer tutors. Nine male students, aged 7 to 9 years, from a learning disabilities resource room served as subjects; four subjects served as tutors, four as students, and one as a generalization student who was assigned to all tutors during generalization testing. Subjects were assigned to tutor-student pairs based on their performances on a pretest of the 220 Dolch Basic Sight Words, with the subjects scoring highest on the pretest serving as tutors. Each tutor worked with his assigned student throughout the study, except for pre- and posttest sessions with the generalization student. During daily sessions, tutors trained their students to recognize sight words using 10 flash cards, each with 1 of the Dolch words printed on it. Training was conducted with all four tutors in a group and was evaluated using a multiple baseline design across three classes of tutoring behaviors: Preparation Behaviors, Prompting Behaviors, and Praising Behaviors. Training consisted of: (a) verbal instructions on how to perform the tutoring behaviors; (b) charts illustrating the appropriate tutoring behaviors with stick figures; (c) role playing with each tutor with the experimenter playing the part of the student and giving feedback and verbal reinforcement to the tutor for performance of the appropriate tutoring behaviors; and (d) verbal testing of each tutor by asking him to state orally the behaviors he was to perform. Training sessions took approximately 30 minutes for each of the 3 classes of tutoring behaviors. Results showed an increased use of tutoring behaviors by tutors as a function of the instructional package. Increases in tutoring behaviors were also observed during postintervention generalization testing of tutors instructing their regular student in new subject matter (math). Data taken from pre-, mid-, and postintervention testing of the 220 Dolch Words showed an increase of identifiable sight words by both students and tutors after completing the peer tutoring program. This study demonstrates that a simple tutor training package can be employed to teach young, special education students to serve as effective tutors for their peers. In addition, the academic gains evidenced by the subjects lend positive support to the effectiveness of peer tutoring programs and specifically to the research of Dineen, Clark, and Risley (Journal of Applied Behavior Analysis, 1977, 10 , 231–238) which demonstrated the educational benefits of tutoring incurred by the tutor as well as by the student.     

儿童最初词汇的获得及其过程

本文追踪研究了两名儿童获得最初词汇的过程。结果表明:在儿童最初语音发展过程中,所发出的音节日益丰富、分化,产生了连续音节,随意性和指向性逐渐增强。儿童获得最初词汇的过程,是连续音节逐渐被有指向的词取代的过程。根据连续音节和有指向的词的比例及沟通作用的变化,儿童获得最初词汇的过程可分为各具特点的三个阶段。两名儿童的最初词汇在其词类构成和功能意义上具有很高的一致性。结合两名儿童之间的个别差异,本文还初步探讨影响儿童获得最初词汇的因素——言语中枢和言语器官的发展、认知的发展,并探讨它们之间可能存在的相互关系。     

汉语阅读发展研究中几种实验任务之间关系的探讨

本研究综合考察汉语阅读获得与发展研究中经常使用的注音、命名与组词,听写与多重选择的关系。结果发现：注音与命名有很强的一致性,并且都与组词有很高的棚关;在这些任务中,听写的难度最大,多重选择最易;几种任务存在共同的加工规律。文章从词汇识别过程讨论了这些结果的理论含义。     

Exploring What Is Encoded in Distributional Word Vectors: A Neurobiologically Motivated Analysis

The pervasive use of distributional semantic models or word embeddings for both cognitive modeling and practical application is because of their remarkable ability to represent the meanings of words. However, relatively little effort has been made to explore what types of information are encoded in distributional word vectors. Knowing the internal knowledge embedded in word vectors is important for cognitive modeling using distributional semantic models. Therefore, in this paper, we attempt to identify the knowledge encoded in word vectors by conducting a computational experiment using Binder et al.'s (2016) featural conceptual representations based on neurobiologically motivated attributes. In an experiment, these conceptual vectors are predicted from text-based word vectors using a neural network and linear transformation, and prediction performance is compared among various types of information. The analysis demonstrates that abstract information is generally predicted more accurately by word vectors than perceptual and spatiotemporal information, and specifically, the prediction accuracy of cognitive and social information is higher. Emotional information is also found to be successfully predicted for abstract words. These results indicate that language can be a major source of knowledge about abstract attributes, and they support the recent view that emphasizes the importance of language for abstract concepts. Furthermore, we show that word vectors can capture some types of perceptual and spatiotemporal information about concrete concepts and some relevant word categories. This suggests that language statistics can encode more perceptual knowledge than often expected.     

Speech parts as Poisson processes

This paper presents evidence that six of the seven parts of speech occur in written text as Poisson processes, simple or recurring. The six major parts are nouns, verbs, adjectives, adverbs, prepositions, and conjunctions, with the interjection occurring too infrequently to support a model. The data consist of more than the first 5000 words of works by four major authors coded to label the parts of speech, as well as periods (sentence terminators). Sentence length is measured via the period and found to be normally distributed with no stochastic model identified for its occurrence. The models for all six speech parts but the noun significantly distinguish some pairs of authors and likewise for the joint use of all words types. Any one author is significantly distinguished from any other by at least one word type and sentence length very significantly distinguishes each from all others. The variety of word type use, measured by Shannon entropy, builds to about 90% of its maximum possible value. The rate constants for nouns are close to the fractions of maximum entropy achieved. This finding together with the stochastic models and the relations among them suggest that the noun may be a primitive organizer of written text.     

The effect of oral vocabulary on reading visually novel words: a comparison of the dual-route-cascaded and triangle frameworks

Dual-route-cascaded (DRC) (e.g. Coltheart & Rastle, Journal of Experimental Psychology: Human Perception and Performance 20 (1994) 1197) and triangle framework (e.g. Seidenberg & McClelland, Psychological Review 96 (1989) 523) predictions were tested regarding the effect of having a word in oral vocabulary prior to reading that same word. Over two sessions, at intervals of 2--3 days, 44 Grade 1 (6--7-year-old) children were aurally familiarized with the sound and meaning of ten novel words (semantic oral instantiation), and with just the sound of another ten novel words (non-semantic oral instantiation). Two to three days later non-word naming performance was significantly more accurate for aurally trained novel words compared to pseudohomophones, which were in turn advantaged over untrained non-words. The semantic manipulation had no effect. Experiment 2 manipulated articulation during (non-semantic) training. Forty Grade 1 children participated. Again, aurally trained items were named more accurately and quickly than equivalently trained pseudohomophones, which were in turn advantaged over untrained non-words. The articulation manipulation had no effect. The results suggest that word-specific phonological information is represented in the reading system independently of semantic or articulatory influences. The results are interpreted as being problematic for both the DRC and triangle frameworks, but more so for the latter.