Latent variable assessment of outcomes in a nurse-managed intervention to increase latent tuberculosis treatment completion in homeless adults.

OBJECTIVE: To assess predictors of latent tuberculosis infection (LTBI) completion by using structural equation modeling (SEM) among homeless adults, a group at great risk for LTBI and active tuberculosis (TB). LTBI therapy is effective in stemming the progression to active TB, yet treatment adherence among homeless persons is difficult to attain. DESIGN: By using SEM, the authors assessed predictors of LTBI completion among a sample of 494 homeless adults in Los Angeles, CA, who received either a nurse case-managed program (NCM) or a usual care program. MAIN OUTCOME MEASURES: Latent variables were created with the baseline variables of site type, age, intervention status, dissatisfaction with health care, depression, TB risk assessment, alcohol use, heroin or cocaine use, and TB knowledge. Outcome variables included many of the same baseline variables as well as treatment completion. RESULTS: LTBI treatment completion (100% adherence) was significantly and positively associated with participation in NCM, older age, and less heroin or cocaine use. NCM also predicted greater TB knowledge, greater ease of treatment, and more satisfaction with treatment (NCM completion rate = 64%, control rate = 42%). CONCLUSION: The culturally competent NCM program, combined with active tracking and incentives, was successful in a difficult-to-treat and highly transient population.     

Double Agents

Jennifer Herdt's Putting On Virtue argues for the theological and normative superiority of noncompetitive accounts of divine and human agency. Although such accounts affirm the indispensability and sovereignty of divine grace they also acknowledge human agents as active participants in their own moral change. Indeed, Herdt contends we cannot coherently describe the human telos as entailing a transformation of character without affirming that human agents meaningfully contribute to that change. Nevertheless, a recurrent worry in Putting On Virtue is that persons may view their growth in virtue as a personal achievement and that the pleasure of positive self‐regard will displace disinterested—and hence truly virtuous—moral aspiration. This discussion of Herdt's volume sympathetically canvasses her argument. It then looks briefly at the reflexive structure of human agency to consider the relationship between the human telos and the transformation of character, and to encourage a more generous attitude toward positive self‐regard.     

EFFECTS OF IMMEDIATE SELF-CORRECTION,DELAYED SELF-CORRECTION,AND NO CORRECTION ON THE ACQUISITION AND MAINTENANCE OF MULTIPLICATION FACTS BY A FOURTH-GRADE STUDENT WITH LEARNING DISABILITIES

This study compared the effects of immediate self-correction, delayed self-correction, and no correction on the acquisition and maintenance of multiplication facts by a fourth-grade student with learning disabilities. Data from daily and maintenance tests indicated that both correct response rate and accuracy were higher when self-correction was immediate rather than delayed or absent.     

Why are there eccentricity effects in visual search? Visual and attentional hypotheses

In standard visual search experiments, observers search for a target item among distracting items. The locations of target items are generally random within the display and ignored as a factor in data analysis. Previous work has shown that targets presented near fixation are, in fact, found more efficiently than are targets presented at more peripheral locations. This paper proposes that the primary cause of this “eccentricity effect” (Carrasco, Evert, Chang, & Katz, 1995) is an attentional bias that allocates attention preferentially to central items. The first four experiments dealt with the possibility that visual, and not attentional, factors underlie the eccentricity effect. They showed that the eccentricity effect cannot be accounted for by the peripheral reduction in visual sensitivity, peripheral crowding, or cortical magnification. Experiment 5 tested the attention allocation model and also showed that RT X set size effects can be independent of eccentricity effects. Experiment 6 showed that the effective set size in a search task depends, in part, on the eccentricity of the target because observers search from fixation outward.     

Prehension movements and perceived object depth structure

This study asked the question, “Will the motor pattern to a perceived two-dimensional (2-D) object differ from that same object when it is perceived as three dimensional (3-D)?” Subjects were required to reach and grasp an apple that could appear to be 2-D or 3-D. Two experimental sessions were conducted. In Condition A, the apple was initially perceived to be 2-D, but, for 20% of trials, it suddenly shifted to a 3-D apple at movement onset. In Condition B, the apple was initially perceived to be 3-D, but, for 20% of trials, it suddenly shifted to a 2-D silhouette of the same apple. For control trials, subjects grasped the perceived 2-D apple as if it were a disc (82%), and they grasped the 3-D apple, as they would a normal apple, with a whole-hand grasp (86%). For Condition A perturbed trials, there was a rapid change from a 2-D precision grip to a 3-D whole-hand prehension, whereas the converse was true for the opposite perturbation. Peak acceleration was anticipated for Condition A perturbed trials but not for Condition B perturbed trials. These results indicate that the motor patterns we use in interacting with an object are strongly influenced by the way we perceive the object in real time, and that object affordances, such as dimension, can override the influence exerted by existing representations.     

MOTIVATING STAFF PERFORMANCE IN AN OPERANT LEARNING PROGRAM FOR CHILDREN

Staff performance in a residential child-treatment facility was measured by counting the number of jobs completed and number of new procedures implemented within one week of their assignment. Public notices were posted listing each staff member's duties and new procedures to be implemented during the week. The notices produced an immediate increase in performance levels, which quickly tapered off. Staff members were then given tokens worth $1.00 each for performing jobs and implementing procedures within one week of assignment. The tokens regained and sustained high levels of performance when used in conjunction with the public notices. The use of public notices alone and tokens alone maintained better performance than baseline levels, but neither was as effective in starting and maintaining high-performance levels as was the combined use of the two.     

ARTICULATION TRAINING OF TWO HEARING-IMPAIRED GIRLS1

Two 4-yr-old hearing-impaired girls were trained to articulate correctly /f/ and /sh/ phonemes in the initial position of words in response to pictures. They were first trained to imitate, and then to respond on demand of “what's this?” As a result, both girls generalized correct articulation to words requiring both phonemes in the initial and final positions.     

The definition of sex stereotypes via the adjective check list

The Adjective Check List (ACL) was employed in the empirical definition of male and female stereotypes by 50 male and 50 female college student subjects. Judgments by male and female subjects correlated highly. There were 33 male adjectives and 30 female adjectives on which at least 75% of both sexes agreed. With a 60% agreement criterion, there were 98 male and 83 female adjectives. Both male and female stereotypes were treated as hypothetical persons and were shown to be highly deviant on standard ACL norms, with the male stereotype being more deviant and perhaps more “disturbed” than the female stereotype. It was concluded that the ACL is a promising method for the definition and study of sex stereotypes.