Applications of combinatorial programming to data analysis: The traveling salesman and related problems

The Traveling Salesman and similar combinatorial programming tasks encountered in operations research are discussed as possible data analysis models in psychology, for example, in developmental scaling, Guttman scaling, profile smoothing, and data array clustering. In addition, a short overview of the various computational approaches from this area of combinatorial optimization is included.The research of the first author was supported by a research grant SOC-75-07860 from the National Science Foundation.     

Matrix reorganization and dynamic programming: Applications to paired comparisons and unidimensional seriation

A recursive dynamic programming strategy is discussed for optimally reorganizing the rows and simultaneously the columns of ann ×n proximity matrix when the objective function measuring the adequacy of a reorganization has a fairly simple additive structure. A number of possible objective functions are mentioned along with several numerical examples using Thurstone's paired comparison data on the relative seriousness of crime. Finally, the optimization tasks we propose to attack with dynamic programming are placed in a broader theoretical context of what is typically referred to as the quadratic assignment problem and its extension to cubic assignment.Partial support for this research was provided by NIJ Grant 80-IJ-CX-0061.     

Towards a phenomenology of ethical expertise

This paper was presented as the Aron Gurwitsch Memorial Lecture, sponsored by the Center for Advanced Research in Phenomenology, at Duquesne University, Pittsburgh, Pennsylvania, October 1989. We would like to thank Drew Cross, David Greenbaum, Wayne Martin, Charles Spinosa, Charles Taylor and Kailey Vernallis for their helpful comments.     

Pair-relational encoding of performed nouns and verbs

Summary Subjects had to learn lists of noun pairs and verb pairs. They were informed in advance about the test types and were tested for free recall (FR) and cued recall (CR). Three classes of encoding instructions were used: standard learning instructions, item-specific enactment instructions (to perform the denoted action of the verb or a typical action for the noun, and to do the same plus finding separate goals for the two elements of each pair), and enactment instructions that were completed by explicit instructions to integrate the word pairs (find a common goal, and find a common goal plus rating your success). There was no effect of encoding instructions on FR of nouns. There was a better FR under all enactment instructions than under standard instructions for verbs. CR decreased after item-specific enactment instructions, in contrast with standard learning instructions, but more for nouns than for verbs. CR increased after the instructions to integrate the pairs, in contrast with item-specific enactment instructions, but more for nouns than for verbs. It was concluded that enactment provides excellent item-specific information that can hardly be enhanced further, and that the item-specific information provided by concrete nouns is fundamentally good and is difficult to enhance by enactment. It is further assumed that enactment not only provides excellent item-specific information, but also hinders pair integration. Therefore, CR decreases after enactment. This decrease can only be overcome when subjects actively try to integrate the word pairs.     

Static laws in a dynamic psychology?

In reply to Lamiell's (1991) criticism, we argue that his notion of nomothesis reflects a Newtonian, mechanistic notion of lawfulness and that his otherwise justified attack on the individual differences paradigm is an overreaction to an era that is dominated by this paradigm.     

Stages of Learning Motivation: Development and Validation of a Measure1

Prochaska and colleagues’(e.g., Prochaska, DiClemente, & Norcross, 1992) stages‐of‐change theory was employed in the current study to reconceptualize the assessment of motivation to learn. We used the stages‐of‐change framework to develop and test a multidimensional measure of learning motivation using 3 independent samples. The pattern of relationships among the learning stages and learning criteria provided strong support for the appropriateness of using a stage‐based perspective to frame learning motivation. In addition, hierarchical regression analysis showed that the Stages of Learning Motivation Inventory (SOLMI) explained variance in the criteria (e.g., exam average, class satisfaction) beyond controls and a commonly used measure of learning motivation. Implications for practice and future research are discussed.     

Report of the ACA Ethics Committee: 2002–2003

This report summarizes the activities of the American Counseling Association (ACA) Ethics Committee during the period of July 1, 2002, through June 30, 2003. Summary data of the complaints filed and the inquiries received are presented.     

Episodic memory deficits slow down the dynamics of cognitive procedural learning in normal ageing

Cognitive procedural learning is characterised by three phases, each involving distinct processes. Considering the implication of episodic memory in the first cognitive stage, the impairment of this memory system might be responsible for a slowing down of the cognitive procedural learning dynamics in the course of ageing. Performances of massed cognitive procedural learning were evaluated in older and younger participants using the Tower of Toronto task. Nonverbal intelligence and psychomotor abilities were used to analyse procedural dynamics, while episodic memory and working memory were assessed to measure their respective contributions to learning strategies. This experiment showed that older participants did not spontaneously invoke episodic memory and presented a slowdown in the cognitive procedural learning associated with a late involvement of working memory. These findings suggest that the slowdown in the cognitive procedural learning may be linked with the implementation of different learning strategies less involving episodic memory in older participants.     

Samuel Todes's Account of Non–conceptual Perceptual Knowledge and its Relation to Thought

Samuel Todes's book, Body and World , makes an important contribution to the current debate among analytic philosophers concerning non–conceptual intentional content and its relation to thought. Todes's relevant theses are: (1) Our unified, active body, in moving to meet our needs, generates a unified, spatio–temporal field. (2) In that field we use our perceptual skills to make the determinable perceptual objects that show up relatively determinate. (3) Once we have made the objects of practical perception determinate, we can make 'practical perceptual judgements' about them. Such 'judgements' have conditions of satisfaction, but they are non–conceptual in that they are a way of coping with an actual object in this situation, from this point of view, in this light, in this orientation, and so forth. (4) By withholding our activity, however, we can transform our practical perception into a detached, spectatorial perception of qualities that are experienced as independent of the object they qualify. (5) Thanks to our conceptual imagination, we can then treat these qualities as reidentifiable properties of reidentifiable objects that can be entertained by thought.     

The interactive effects of job advertisement characteristics and applicant experience on reactions to recruitment messages

Job seekers often use job advertisements presented during the early stages of recruitment to gather important information about potential employers. Content of these advertisements as well as associated peripheral cues have the potential to influence job seekers' organizational attitudes. Using the elaboration likelihood model as a theoretical framework, the authors proposed that job seekers' previous work and job search experience moderate the extent to which these job advertisement characteristics influence attitudes towards organizations. Results suggest that the content of job advertisements influence the organizational attitudes of experienced job seekers more than their inexperienced counterparts. Additionally, the presence of peripheral cues (i.e. physical attractiveness of those persons shown in recruitment material) appears to have a greater effect on the organizational attractiveness perceptions of job seekers having less work and job search experience versus those having more experience. Implications of the findings regarding organizational recruitment practices are discussed.