Changes in the Composition of the Homeless Population: 1992–2002

This study examines changes in the characteristics of the homeless population before and after a period of extended economic expansion (1992–2002). Data from other sources suggest that, during this 10-year period, the size of the overall population of homeless persons may have declined slightly, though not significantly, both in the city studied and nationally. In-depth surveys of representative samples of homeless adults (N = 249 in 1992–94; N = 220 in 2000–2002) revealed significant differences in the composition of the homeless population across the time period, consistent with queuing theory. Persons experiencing homelessness after the expansion appeared to be a more “chronic,” less readily employable population than those interviewed at the start of the expansion: Those interviewed after were older, spent more time living on the streets, had more health symptoms, were more likely to have a diagnosis of schizophrenia, and had more restricted social networks and social support. Policy, research, and service provision implications of the findings are discussed.     

Concurrent and 2-year longitudinal relations between executive function and the behavior of 1st and 2nd grade children.

Abstract Concurrent and 2-year longitudinal relations were investigated between two indicators of children's ( n =60; mean age = years 11 months) executive function, inhibitory control and sequencing ability, and behavior problem symptomatology. Dependent measures were parent and teacher reported internalizing and externalizing behavior. Hierarchical multiple regression analyses demonstrated few significant concurrent associations between either inhibitory control or sequencing ability, and behavior problem symptoms. In contrast, baseline inhibitory control predicted decreased teacher reported externalizing, and parent reported externalizing and internalizing behavior problems over a 2-year period. Baseline sequencing ability also predicted decreased teacher reported externalizing and parent reported internalizing behavior over this same time period. Results suggest that some aspects of executive function in early elementary grade-school children may be more strongly associated with change in behavior over time than concurrent behavior. Implications of these findings for the prevention of behavior problems are discussed.     

A Brief Proof of the Full Completeness of Shin’s Venn Diagram Proof System

In an article in the Journal of Philosophical Logic in 1996, “Towards a Model Theory of Venn Diagrams,” (Vol. 25, No. 5, pp. 463–482), Hammer and Danner proved the full completeness of Shin’s formal system for reasoning with Venn Diagrams. Their proof is eight pages long. This note gives a brief five line proof of this same result, using connections between diagrammatic and sentential representations.     

Does Motivation Impact OCD Symptom Severity? An Exploration of Longitudinal Effects

Understanding the role of patient motivation in OCD treatment is of clinical importance given the requisite autonomous role of patients in Exposure and Response Prevention. The present study investigated state- and trait-like relations between three variables: two previously established motivational constructs, readiness to change (RTC) and committed action (CA), derived from the University of Rhode Island Change Assessment, and OCD symptom severity as measured by the self-report Yale-Brown Obsessive Compulsive Scale (Y-BOCS-SR). Utilizing a random-intercept cross-lagged panel model (RI-CLPM) design, we assessed autoregressive, within-time correlations, and cross-lagged effects of RTC, CA, and Y-BOCS-SR scores at admission, month 1 of treatment, and discharge from an intensive/residential treatment program for OCD. Results revealed significant autoregressive (i.e., state-like) effects for CA and Y-BOCS-SR, negative within-time correlations between state CA and Y-BOCS-SR across all time points, a positive within-time correlation between state CA and RTC at admission, and a cross-lagged effect between state Y-BOCS-SR at month 1 of treatment and state RTC at discharge. Results also demonstrated that the stability of the RTC variable was attributable to trait-like factors in the present sample. This study is novel in its use of RI-CLPM in an OCD sample and represents an important addition to the literature on the longitudinal impacts of dynamic constructs of motivation. Our findings may provide future researchers with strategies to supplement ERP with CA-driven motivational interviewing.     

Promotion as contrastive increase in expected fit

Philosophical Studies - What is required for an action to promote the satisfaction of a desire? We reject extant answers and propose an alternative. Our account differs from competing answers in...     

A Construct Modeling Approach to the Assessment of Reading Comprehension for Adolescent Readers

This article describes the development of an assessment system for adolescent reading comprehension. It presents a research context—a reading intervention implemented in middle and high schools in an urban district—which became the impetus for the work. The article outlines the organizational principles of construct modeling that guided the design of the measures and describes the theory and research on adolescent reading that formed the basis of the work. It outlines the technical aspects of the measurement system and the methodology used to analyze internal and external validity. The curriculum-embedded assessment profiled in this study informs teachers about student learning. It also grounds assessment in cognitive and learning theory, thereby linking the assessments to broader content standards and current research and policy. By aligning what is taught with what is assessed, the article adds to a growing body of work that calls for increased integration between reading intervention and assessment teams.     

Tempo sensitivity in isochronous tone sequences: the multiple-look model revisited

Factors affecting tempo sensitivity in isochronous tone sequences were investigated in two experiments. Participants listened to tones in sequence conditions in which the number of time intervals in isochronous standard and comparison sequences was varied, and they were asked to judge the tempo of the comparison relative to the standard. When the duration of the standard interval was held constant, tempo sensitivity was affected by the number of comparison intervals, but not by the number of standard intervals. In contrast, when the duration of the standard interval was varied randomly from trial to trial, tempo sensitivity was affected by the number of intervals in both sequences. The present findings are discussed in the context of a generalized multiple-look model that posits independent contributions of both sequences to tempo sensitivity. Quantitative model fits suggest that the relative contribution of the number of the standard intervals to tempo thresholds depends on (1) the availability of a stable long-term referent for the standard tempo and (2) a priori knowledge about the number of standard intervals.     

Bibliographic processes and products, and a bibliography of the published primary-source works of B. F. Skinner

This paper introduces the nature and practice of bibliography (e.g., definition, history, and genres); it reviews the extant B. F. Skinner bibliographies (1958 to 2001); and it describes the methods used in constructing a new, comprehensive, and corrected bibliography of Skinner's primary-source published works. The bibliography includes 291 items from across 16 categories of publications (e.g., books, articles, chapters, monographs, book reviews, manuals, encyclopedia entries, letters to the editor) and lists them in chronological order (1930 to 1999). A discussion section addresses the bibliography's limitations, how it might be enlarged and expanded, its value for qualitative and quantitative historical inquiry, and the beginnings of a "Skinner industry."