Does half a pizza equal half a box of chocolates?: Proportional matching in an analogy task

There is now a considerable literature demonstrating analogical reasoning in children as young as 3 and 4 years of age. Here, we used analogy as a sensitive measure of proportional understanding in young children. In two experiments, we examined whether children's performance in a proportional analogy task would be affected when concrete models evoking different kinds of conceptual referents were used as the basis for the analogies. We chose two different conceptual referents (pizza and chocolates) of the kind typically used in fractions instruction. In both experiments, children were shown a base substance by the experimenter (e.g., a whole pizza) from which a proportion was then removed (e.g., a half pizza). Children were asked to complete the analogy by removing an equivalent proportion of their own target set (e.g., a whole box of chocolates changed to half a box of chocolates). This proportional matching paradigm resulted in analogy problems of the form: 8/8 pizza: 4/8 pizza: 4/4 box of chocolates:2/4 box of chocolates. Results indicated that 3- to 4-year-old children do have an emergent understanding of proportional equivalence, even when the materials to be matched are not isomorphic.     

What causes scale errors in children?

A recent article by DeLoache et al. has documented an intriguing phenomenon in the development of action planning in young children. When children act on toy replicas of larger objects they make scale errors that are consistent with the full-sized object. Although the actions selected are inappropriate, their execution accurately takes into account the true size of the target. This phenomenon permits tests of the predictions of the perception-action and planning-control models of vision for action.     

Dimesionality of Rotter's locus of control scale: an application of the ‘very simple structure’ technique

The literature on the dimensional structure of Rotter's Locus of Control Scale presents a confused picture, with solutions ranging from two to nine factors reported. In the present study, Revelle and Rocklin's (1979)‘Very Simple Structure’ (VSS) method was used to determine the optimum number of interpretable factors to extract from the two-factor model represented the optimum solution, and that there was no justification for extracting more than two factors for the purpose of subscale construction. Oblique rotations, as compared with orthogonal Varimax rotation, did not improve the goodness-of-fit of the two-factor solution. When data from males and females were analysed separately, there was no evidence of differences in factorial structure. The findings illustrate how the VSS technique, by providing a quantitative basis for deciding how many factors to extract from a data set, can be used to clarify inconclusive results obtaind from the application of conventional psychometric ‘rules of thumb’ in factor analysis.     

Validating a “spurning scale” for teachers

Based on a model on helpers’ reactions to rejection of their help, a spurning scale for teachers was constructed, comprising items that examine teachers’ perception of spurning of their help/advice by students and colleagues. Three avenues were taken to assess the validity of the scale: The relationships of the spurning scores with burnout scores; the relationships of spurning scores with job (dis)satisfaction and with job turnover; and relationships of spurning scores with job stresses from different sources. In-service teachers enrolled in a teacher training program were invited to fill out a questionnaire that contained these variables. Results suggest that the spurning scale is valid.     

Family-friendly policies and equal opportunities: a contradiction in terms?

This paper presents the findings from a research study of one large public sector organisation's strategy to promote gender equality and family friendliness. An examination was made of the organisation's policy documentation in this area and a questionnaire survey containing both closed and open-ended questions was undertaken across all staff in the organisation: women and men, professional, technical, administrative, secretarial, cleaning, catering and security staff. This paper reports the findings from this investigation. It analyses the informants' knowledge of, and views on, the impact of the equal opportunities strategy, and any suggestions they had for its development. Also, their views on gender equality more generally within society were interrogated to explore any interconnection between these views and resistance to change within their organisation. By exposing the complex nature of this equal opportunities/family-friendly (EO/FF) project in one organisation, the findings have potentially interesting implications for gender equality, which could benefit from further investigation.     

Words and hemifields: do the hemispheres enjoy equal opportunity?

A common technique in research into cerebral asymmetry in both normal and clinical populations involves the use of lateralized visual displays. The validity of this approach depends on several generally implicit assumptions about the character of the cognitive processes involved. For example, when words are used as stimuli, cognitive processing is assumed to involve either "whole-word" or "ends-in" analysis. In this way, both hemispheres are assumed to have equal opportunities to recognize the word. These assumptions are critical, because if they are wrong, explanations based on established perceptual principles may provide a sufficient and more parsimonious explanation for hemifield asymmetries than hemispheric specialization theories. This point is developed and illustrated with particular reference to word recognition and classification. From a purely perceptual viewpoint, the right visual field advantage observed in tasks using word stimuli is to be expected given the presence of systematic biases in favor of initial characters or features of words and the relationship between retinal eccentricity and visual acuity. In other words, there is no need nor justification for a hemispheric account of visual field differences in such tasks. Some of the limiting conditions and theoretical implications of this argument are identified and discussed.     

Is equal moral consideration really compatible with unequal moral status?

The issue of moral considerability, or how much moral importance a being's interests deserve, is one of the most important in animal ethics. Some leading theorists--most notably David DeGrazia--have argued that a principle of "equal moral consideration" is compatible with "unequal moral status." Such a position would reconcile the egalitarian force of equal consideration with more stringent obligations to humans than animals. The article presents arguments that equal consideration is not compatible with unequal moral status, thereby forcing those who would justify significantly different moral protections for humans and animals to argue for unequal consideration.     

The dimensionality of counterproductivity: Are all counterproductive behaviors created equal?

Most studies of counterproductive work behavior (CWB) assess it as one or two overall dimensions that might obscure relationships of potential antecedents with more specific forms of behavior. A finer-grained analysis of the relationship between counterproductive work behavior and antecedents was conducted with the five-subscales (abuse toward others, production deviance, sabotage, theft, and withdrawal) taken from the 45-item Counterproductive Work Behavior Checklist, a measure that has been used in a number of prior studies. Described is the rationale for each of the five dimensions, which have been discussed individually in the literature. Data from three combined studies provide evidence for differential relationships with potential antecedents that suggest the use of more specific subscales to assess CWB. Most notably, abuse and sabotage were most strongly related to anger and stress, theft was unrelated to emotion, and withdrawal was associated with boredom and being upset. Finally, the distinct forms of CWB may suggest distinct underlying dynamics, that vary in their balance of hostile and instrumental motivational systems.     

The ‘ability’ scale in item characteristic curve theory

For the six available sets of empirical data, the discrimination (slope) parameter of the logistic item characteristic curve was found to have a significant positive correlation over items with the difficulty (location) parameter. This unpleasant situation can be eliminated by a suitably chosen transformation of the ability scale. An example of the transformation is given and some empirical results of using the transformed scale are shown.     

When can information from ordinal scale variables be integrated?

Many theoretical constructs of interest to psychologists are multidimensional and derive from the integration of several input variables. We show that input variables that are measured on ordinal scales cannot be combined to produce a stable weakly ordered output variable that allows trading off the input variables. Instead a partial order is obtained in which the amount of ordering depends on the number and nature of the input variables and the relationship between them. However, if trade-offs are excluded, it is still possible to obtain a weak order using lexicographic ordering of the input variables. An implication is that psychological processes that integrate information from different input variables and that produce consistent output require that the input variables be measured on more than ordinal scales. A further implication is that the level of measurement of the input variables affects the kind of psychological model that can be applied to the process.     

Are all experiences of fit created equal? Two paths to persuasion

Regulatory fit influences the effectiveness of persuasion through two paths: 1) a “feeling right” as “feeling good about the target” effect where feeling right is a positive feeling that transfers positivity directly to the target, similar to “feelings as information” or fluency effects, and 2) a “feeling right” as “feeling confident about the evaluation” effect where feeling right is feeling confident about one's evaluative judgments of the target that increases reliance on those evaluations. We propose that the involvement with an attitude-related issue in a persuasion message is one key factor that determines when each effect will occur. Five studies demonstrate that under high involvement, fit increased reliance on evaluative reactions to the target, making a target of a positive advocacy message evaluated as more positive and a target of a negative advocacy message evaluated as more negative; and under low involvement, fit increased the positivity of feelings toward the target regardless of the valence of the message advocacy, making the evaluation of the target more positive for either a positive or negative advocacy message.     

Does expressive timing in music performance scale proportionally with tempo?

Summary Evidence is presented that expressive timing in music is not relationally invariant with global tempo. Our results stem from an analysis of repeated performances of Beethoven's variations on a Paisiello theme. Recordings were made of two pianists playing the pieces at three tempi. In contrast with the relational-invariance hypothesis (see Repp, 1994), between-tempo correlations were in general lower than within-tempo correlations. Analyses of variance of log-transformed inter-onset intervals (IOIs) showed significant interactions between tempo and IOI, i. e., evidence against a proportional relation between timing and tempo. Complex, but consistent, nonproportional patterns were shown in the analyses of the timing of the grace notes in the piece. The analysis suggests that timing aspects of music are closely linked to the musical structure and can be studied and manipulated only respecting this relation — not as a global timing pattern or tempo curve. Finally, it is shown that methodological issues of data collection and analysis had a significant influence on the results.     

Learning about the equal sign: Does comparing with inequality symbols help?

This study investigated whether instruction that involves comparing the equal sign with other relational symbols is more effective at imparting a relational interpretation of the equal sign than instruction about the equal sign alone. Third- and fourth-grade students in a comparing symbols group learned about the greater than, less than, and equal signs and had the opportunity to compare the inequality symbols with the equal sign. Students in an equal sign group learned about the equal sign only. A third group of students served as a control group. Three aspects of students’ knowledge were assessed before and after the lesson: (a) conceptual understanding of the equal sign, (b) equation encoding, and (c) problem solving. Students in the comparing symbols group showed greater gains in conceptual understanding from pretest to posttest than students in the other two groups, and students in the comparing symbols group also scored higher on a posttest that assessed knowledge about inequality symbols and inequality problem solving. Thus, they learned about three symbols in the same amount of time as other students learned about the equal sign alone or not at all. Therefore, an instructional approach involving comparison can be an effective tool for learning about concepts in mathematics.     

Validating a “spurning scale” for nurses in Hong Kong

Based on a model on spumed helpers’ reactions, a spurning scale for nurses was constructed with items to assess the extent to which practicing nurses experience recurrent rejection of their help by patients and colleagues. Three approaches were employed to examine the validity of the scale: the relationship of the spurning scores with job satisfaction and turnover scores; the relationships of the spurning scores with burnout scores; and the relationships of the spurning scores with scores indicative of stress arising from interactions with one's patients, colleagues, and supervisor. Practicing nurses in Hong Kong (N = 212) who were enrolled in a refresher program of studies responded to a questionnaire containing the variables of interest. The results offered promising evidence for the validity of the scale.     

Believing in one’s equal rights: Self-respect as a predictor of assertiveness

In the present research self-respect is defined as a person’s ability to see the self as someone who has the same basic rights and dignity as others. Self-respect fills a gap in previous theorizing on the self because unlike other self-concepts it can be linked to assertiveness and claim making. Self-respect was empirically distinguished from self-competence and self-confidence (Study 1) as well as from psychological entitlement, self-esteem and self-acceptance (Study 2). Self-respect predicted assertive responses above and beyond these other self-scales in two correlational studies (Studies 1 and 3) and one experiment (Study 2). As predicted, self-respect was not related to aggressive responses, but psychological entitlement was (Studies 2 and 3). Implications for future research are discussed.     

Employees’ perception of diversity management practices: scale development and validation

Scholars and practitioners are paying increasing attention to diversity management (DM). Despite this increase and an expanding literature, there exists a lack of psychometrically sound scales to measure DM practices and none that capture employees’ perception of DM practices (EPDMP). This dearth in literature has thus hindered DM research. To fill the gap, in the present paper, using a qualitative study and 3 quantitative studies in a sample of 590 employees across various sectors in the UK, a 9-item uni-dimensional EPDMP scale is developed and validated. Results from content adequacy, reliability, convergent, discriminant, nomological and incremental predictive validity assessments provide support for the measures use in diagnostic and theory testing efforts. This paper concludes with a discussion of the implications for theory, management practice and future research.     

Career adapt-abilities scale — Icelandic form: Psychometric properties and construct validity

This study examined the psychometric characteristics and construct validity of the Icelandic form of the Career Adapt-Abilities Scale (CAAS-Iceland). The CAAS consists of four scales that measure concern, control, curiosity, and confidence as psychosocial resources for managing occupational transitions, developmental tasks, and work traumas. The 24-item measure was translated from English and administered to 1566 Icelandic students aged 14–30. Internal consistency estimates of reliability for the subscale and total scores ranged from .77 to .92. The construct validity of the measure was tested using confirmatory methods. The results indicated that the four-factor hierarchical model of career adaptability shows an acceptable fit in Iceland. The mean scores on the scales are high compared to the other countries, indicating that there may be problems with the translation of the response scale. The results indicate that the CAAS-Icelandic Form is reliable and valid and can be used with minor modifications in career counseling and research in Iceland.     

Is the anisotropy of perceived 3-D shape invariant across scale?

A number of studies have resulted in the finding of a 3-D perceptual anisotropy, whereby spatial intervals oriented in depth are perceived to be smaller than physically equal intervals in the frontoparallel plane. In this experiment, we examined whether this anisotropy is scale invariant. The stimuli were L shapes created by two rods placed flat on a level grassy field, with one rod defining a frontoparallel interval, and the other, a depth interval. Observers monocularly and binocularly viewed L shapes at two scales such that they were projectively equivalent under monocular viewing. Observers judged the aspect ratio (depth/width) of each shape. Judged aspect ratio indicated a perceptual anisotropy that was invariant with scale for monocular viewing, but not for binocular viewing. When perspective is kept constant, monocular viewing results in perceptual anisotropy that is invariant across these two scales and presumably across still larger scales. This scale invariance indicates that the perception of shape under these conditions is determined independently of the perception of size.     

Dual-task interference with equal task emphasis: graded capacity sharing or central postponement?

Most studies using the psychological refractory period (PRP) design suggest that dual-task performance is limited by a central bottleneck. Because subjects are usually told to emphasize Task 1, however, the bottleneck might reflect a strategic choice rather than a structural limitation. To evaluate the possibility that central operations can proceed in parallel, albeit with capacity limitations, we conducted two dual-task experiments with equal task emphasis. In both experiments, subjects tended to either group responses together or respond to one task well before the other. In addition, stimulus-response compatibility effects were roughly constant across stimulus onset asynchronies (SOAs). At the short SOA, compatibility effects also carried over onto response times for the other task. This pattern of results is difficult to reconcile with the possibility that subjects share capacity roughly equally between simultaneous central operations. However, this pattern is consistent with the existence of a structural central bottleneck.