Intuitive Perceptions of Decision-making Strategy: Naive Assessors' Concepts of Integrative Complexity

Although there are measurable differences in integrative complexity among solutions that individuals generate in dealing with problems, it is uncertain to what extent people comprehend, recognize, and have preferences among different levels of complexity. Integrative complexity is a function of differentiation (the perception of several attributes within, or perspectives about, a topic) and integration (combining the differentiated characteristics in an interactive or synthesizing solution). The current paper reports two experiments dealing with how university students perceive, interpret, and choose among solutions differing in complexity. Experiment 1 showed that subjects accurately rated the complexity of described solutions differing along the continuum, but that their assessment of their own responses differed from the results of expert scoring. Their self-estimated complexity was highly correlated with their preferences, and preferred complexity was reliably higher than either expert- or self-assessed complexity of subject-generated solutions. Subjects were able to hypothesize quite accurately about environmental and endogenous factors likely to affect complexity. Experiment 2 found that in response to problem scenarios, solutions selected as being potentially most effective were consistently more complex than solutions that participants considered themselves most likely to use. The idea of complexity seems to be intuitively recognizable and understandable by untrained subjects: They can and do distinguish among problem solutions (self-generated or presented) that vary on that dimension, and are able to assess accurately the effects of relevant variables. Such subjects also share the bias shown by experts in favour of the superiority of more complex approaches.     

Validation of a full body 3-D dynamic linked segment model

In studies related to human movement, linked segment models (LSM's) are often used to quantify forces and torques, generated in body joints. Some LSM's represent only a few body segments. Others, for instance used in studies on the control of whole body movements, include all body segments. As a consequence of the complexity of 3-dimensional (3-D) analyses, most LSM's are restricted to one plane of motion. However, in asymmetric movements this may result in a loss of relevant information. The aim of the current study was to develop and validate a 3-D LSM including all body segments. Braces with markers, attached to all body segments, were used to record the body movements. The validation of the model was accomplished by comparing the measured with the estimated ground reaction force and by comparing the torques at the lumbo-sacral joint that resulted from a bottom-up and a top-down mechanical analysis. For both comparisons, reasonable to good agreement was found. Sources of error that could not be analysed this way, were subjected to an additional sensitivity analysis. It was concluded that the internal validity of the current model is quite satisfactory.     

Meaning,amount of processing,and memory for words

Two experiments were carried out in order to try to resolve the controversy about whether the semantic processing of a word necessarily involves all the elements of its meaning. In the first experiment, subjects categorized a list of auditorially presented words according to whether or not they were natural consumable solids (e.g., “apple“). They were then given an unexpected test of their ability to recall the whole list, which contained equal numbers of words with none, one, two, or all three of the target components. The results confirmed the prediction that the greater the number of components a word has in common with a target category, the better it will be recalled. The second experiment used a visual presentation of a list of words, which subjects scanned for members of a particular target category. There were four different target categories assigned to independent groups of subjects. The results again confirmed the prediction. On the assumption that memorability in such tasks is determined by amount of processing, we conclude that some elements of the meaning of a word can be processed without having to process all of them.     

A new computational method to fit the weighted euclidean distance model

This paper describes a computational method for weighted euclidean distance scaling which combines aspects of an analytic solution with an approach using loss functions. We justify this new method by giving a simplified treatment of the algebraic properties of a transformed version of the weighted distance model. The new algorithm is much faster than INDSCAL yet less arbitrary than other analytic procedures. The procedure, which we call SUMSCAL (subjectivemetricscaling), gives essentially the same solutions as INDSCAL for two moderate-size data sets tested.Comments by J. Douglas Carroll and J. B. Kruskal have been very helpful in preparing this paper.     

Family Secrets:

Family secrets are examined in a two-part article. Part I explores the dynamics of secrets in the relational context. Terminology is proposed for different types of family secrets as well as for different roles within the relational context. Guidelines for identifying family secrets are presented, and typical patterns accompanying or underlying secrets are explored. Different stances toward secrets are discussed, with particular emphasis on ethical issues. Finally, individual and relational consequences of secrets are proposed. Part II extends this discussion to the management of family secrets in marital and family therapy. Ethical and strategic dilemmas facing the therapist are examined as are consequences of secrets in treatment. A particular therapeutic stance is recommended and illustrated with examples of both reparative and preventive applications.     

A Single Intervention: A Visit to the Family

The following letter is reported unchanged except for disguised names. Concern with repairing disrupted relationships of adult members of a family with their own parents has been a matter of growing interest to a number of family therapists; Bowen (1), Boszormenyi-Nagy (2), and Framo (3), among others have stressed the importance of sending family members back to their families of origin. This report makes no effort to formulate the process in any particular theoretical framework (i.e., as reestablishing connectedness after an “emotional cut-off” or rebalancing a ledger of fairness, or whatever) but is intended only to illustrate the kind of outcome one may hope for in prescribing such a maneuver. It is offered simply as a clinical note. The letter needs little prefatory explication. Mr. Jack Newburgher had been a patient in psychoanalytic treatment for four years, with a quite successful outcome. On two occasions in the course of his therapy a joint session had been held with Mr. Newburgher and his wife, Muriel, when changes in his behavior had precipitated crises in the marital relationship. His therapy had terminated about two years before the visit referred to in the letter. Mr. Newburgher had called and asked for a joint consultation with Muriel about an acute family problem they were experiencing. Some — not all — of the background material was described, not nearly as coherently as it is reported in Muriel's letter, but in sufficient detail to make it plain that she was in distress about having to withdraw completely from her parents and that their family was in disarray as a consequence of her distress. The acuteness of the emotional disturbance, against a background of a lifelong adversary relationship between Muriel and her father and a history of ten years of illness on her fathers' part, suggested that the distress was the product of Muriel's anxiety and guilt over a decision to cut herself off completely from her parents. As a consequence, Muriel was urged to visit her family of origin, with the caveat that she might indeed discover them to be malignantly self-centered people indifferent to their effect on her and her family, but that she would at least have the gratification of having tried. The reference to “speaking French” was to the therapist having suggested that, on the other hand, she might find that her parents expressed their feelings in a different modality from her definitions of how feelings should be expressed, much as though their native tongue were French and she were insisting that they must speak to her in English.     

The Parent's Nazi Past and the Dialogue Between the Generations

This paper considers the impact of the Nazi past on the succeeding generation in Germany and on the dialogue between the two generations, using the theoretical framework of the dynamics of delegation — missions entrusted to parents by their children. Those issues became manifest in the course of conjoint family interviews with adolescents and young adults whose parents had been identified with the Nazi past.     

Validity and quantification in intuitionism

We distinguish three different readings of the intuitionistic notions of validity, soundness, and completeness with respect to the quantification occurring in the notion of validity, and we establish certain relations between the different readings. For each of the meta-logical notions considered we suggest that the most natural reading (which is not the same for all cases) is precisely the one which is required by the recent intuitionistic completeness theorems for IPC.This paper was partly written while the first author, H. C. M. de Swart, was a Visiting Fellow at Princeton University for the academic year 1976–1977. This opportunity was given to him by the Niels Stensen Stichting in Amsterdam, the department of philosophy of the Catholic University in Nijmegen and by Princeton University. He is happy to express his appreciation for that opportunity.