Modal logic and model theory

We propose a first order modal logic, theQS4E-logic, obtained by adding to the well-known first order modal logicQS4 arigidity axiom schemas:A → □A, whereA denotes a basic formula. In this logic, thepossibility entails the possibility of extending a given classical first order model. This allows us to express some important concepts of classical model theory, such as existential completeness and the state of being infinitely generic, that are not expressibile in classical first order logic. Since they can be expressed in -logic, we are also induced to compare the expressive powers ofQS4E and . Some questions concerning the power of rigidity axiom are also examined.     

Short-term serial recall in ADDH,normal, and reading-disabled boys

Short-term retention of verbal items of span and subspan length was examined in hyperactive (ADDH), normal and non-ADDH reading-disabled boys. Performance of ADDH and normal boys did not differ on three measures of verbal serial recall. Thus, it appears that the cognitive deficits of ADDH children cannot be attributed to deficient retention of stimuli. In contrast, reading-disabled (RD) boys performed significantly more poorly than both normal and ADDH boys when required to recall verbal items following filled delay intervals in which the children were required to perform a competing verbal activity. The results suggest that verbal encoding of RD children is particularly vulnerable to interference from other verbal stimuli. ADDH and RD children may represent subsamples of children demonstrating academic difficulties, with each group showing a characteristic pattern of cognitive deficits.This article is based on a doctoral dissertation submitted to the Faculty of Graduate Studies and Research of McGill University. Special thanks are due to Rhonda Amsel for her help and advice.     

The relationship between sex role stereotypes and requisite management characteristics among college students

The relationship between sex role stereotypes and characteristics perceived as necessary for management success was examined among male and female undergraduate management students and compared with results of managers today as well as with those of managers studied 15 years ago. Male management students, similar to their managerial counterparts in the 1980s and 1970s, still adhere to the male managerial stereotype and perceive that successful middle managers possess characteristics, attitudes, and temperaments more commonly ascribed to men in general than to women in general. Female management students, similar to today's female managers, no longer sex type the managerial job, a change from the female managers of the 1970s. Implications of these outcomes for undergraduate management education are discussed.Portions of this research were funded by a Gettysburg College Institutional Self Renewal Grant.     

Family logotherapy with an overweight family

Family logotherapy is a kind of family treatment based upon the central idea that a number of different kinds of symptoms and problems can fill the existential vacuum which develops in families that are unable to experience and discover a sense of family meaning. In this paper the author overviews and briefly describes a number of family logotherapy treatment activities and shows how they can be used with a family which utilizes overeating to fill a family existential vacuum.     

Family constellations and friendship systems

An individual friendship system is composed of the friends a person has had and/or still has. Individual friendship systems can be characterized objectively in similar ways as can family constellations. The data of a questionnaire study of individual friendship systems and respective family backgrounds of more than 400 subjects revealed greater differentiation and variation with age as well as with the presumed absence of conflict, disruption, and loss in a person's social development. Various interactions between family backgrounds could be traced. To illustrate the practical use of characteristics of a person's individual friendship system two clinical cases matched for age and family background, one with a mild neurotic problem and the other severely disturbed, were compared.Based on a lecture first given at the Family Therapy Symposium of Georgetown University, Washington, DC, on November 9, 1986.     

Network intervention,existential depression,and the relocated Appalachian family

The authors use the concept of existential depression as the basis for a set of treatment interventions that are often useful to the relocated Appalachian family and describe the use of a number of different network intervention strategies for use with such families and the existential reasons for their use.Both are of Appalachian heritage and have extensive experience in family practice with the Appalachian family.     

Sexual dysfunction in women sexually abused as children

Women who were sexually victimized as children report problems in relating to both men and women. Studies have found that victims are less satisfied with their current sexual relationships and with the quality of their relationships with men in general. Fear of sex, arousal dysfunction and desire dysfunction were the most common sexual disturbances found in incest victims.The purpose of this paper was to examine the differences in sexual functioning in abused women who perceived themselves to be adjusted to the trauma of their sexual abuse and those who did not.A sample of 57 nonclinical adult women who had been sexually abused as children was studied. Data were analyzed by means of cross-tabulation, chi square statistics, analysis of variance, and multiple regression.Orgasm was experienced by 63% of the women. There was a significant interaction among ability to be an orgasmic, sexual esteem and adjustment to abuse. Over 56% of the women experienced physical discomfort during intercourse and 36% indicated that they needed sex therapy. The implications of these and other findings are discussed.     

Negotiating transitions: a supervision model for home-based family therapists

Home-based family-centered treatment programs provide mental health and case management services to families in their own home. Treatment objectives include the prevention of residential or psychiatric placement, strengthening the family unit, and promoting family self-sufficiency. Little has been written, however, regarding the supervision of home-based, family-centered therapists. The purpose of this article is to describe a supervision model to teach novice-level family therapists to think systemically and to do family therapy with multiproblem at-risk families.     

Prosocial behavior in hyperactive boys: Effects of stimulant medication and comparison with normal boys

To clarify the effects of stimulant medication on hyperactive (ADHD) children's prosocial as well as aversive behaviors toward peers, 19 hyperactive boys, aged 7–12, were observed as they acted as leaders for groups of 2–4 unfamiliar younger children. In a doubleblind crossover design, subjects were observed twice, once on placebo and again on a moderate (0.6 mg/kg) dose of methylphenidate (Ritalin). Thirteen comparison boys, without problems in attention and behavior, were also observed in the same leader roles. Relative to comparison boys, hyperactive boys on placebo were more socially engaged, used more aversive leadership techniques, and were rated as less likable by the younger children in their groups. Aversive social behaviors were the strongest predictors of being disliked by the younger children. No differences were found between comparison and unmedicated hyperactive boys for any aspect of prosocial behavior. Stimulant medication had a general dampening effect on social behavior, significantly reducing social engagement and increasing (mild) dysphoria relative to the placebo condition. The implications of these findings for understanding and treating the peer relationship difficulties of hyperactive children are discussed.This study was conducted at the Fernald Child Study Center, UCLA, and we very much appreciate the contributions of the many staff members of the program, especially those of Alice Huber-Dressler and Tracy Heller. We also are very grateful to staff and children of Corinne A. Seeds University Elementary School for their participation in this study.     

Individual differences in resultant achievement motivation and latency to and persistence at an achievement task

Alternative hypotheses generated from the Atkinson (1957) and Atkinson and Feather (1966) risk-taking model of achievement motivation and the Atkinson and Birch (1970) dynamics of action theory comparing groups high and low in resultant achievement motivation (RAM) on latency to and persistence at an achievement task were tested. Subjects who had made two or more atypical shifts (choice of an easier task following success and choice of a more difficult task following failure) during 21 trials of a target-shooting game the first week were classified as low RAM (n=154), and subjects who had made 0 or 1 atypical shift were classified as high RAM (n=155). In week 2 subjects divided their time among two nonachievement tasks and the very easy, easy, intermediate, difficult, or most difficult levels of the achievement task. No main effects or interactions were found when latency to the achievement task was analyzed in a RAM by Difficulty level × Gender individual difference design. High-RAM subjects persisted significantly longer than low-RAM subjects across all conditions. Results are explained using the dynamic concepts of instigation, inhibition, and consummation. Analyses of sequential choices (week 1) among five difficulty levels did not support the Atkinson (1957) explanation of atypical shifts as avoidance of intermediate challenges for low-RAM subjects. Subjects who avoided the target-shooting game the second week more often persisted at the very easy task following success but not at the most difficult task following failure, results that are partially supportive of Feather's (1961) analysis of persistence.I wish to thank Dr. David Reuman, who suggested the research topic; the 24 undergraduate research assistants who ran subjects for this experiment; Rochelle Breitenbach, Laurie Colisanti, Kevin Kurkowski, Lee Ann McHenry, and Brenda Yee, who assisted with the data preparation and analyses; Ann Beck and Randi Gilbert, who provided editorial assistance; and Dr. Tilly Houtmans, who commented on an earlier version of this paper. A paper based on the dynamics of action research was presented at the Nags Head Conference on Motivation and Emotion on June 17, 1990. A paper based on the level of aspiration/achievement motivation results was presented at the Third International Meeting of the Society for the Advancement of Field Theory on September 16, 1988. A copy of the BASIC program for the Apple IIe computer is available to anyone who sends a 5 1/4-inch diskette.