An analysis of spatial orientation test performance

Spatial Orientation ability correlates with important criteria such as achievement in calculus and physics, but this ability has not been investigated systematically. Performance on individual items adapted from a standard test of Spatial Orientation was studied. Subjects judged whether aerial views would be seen by an observer oriented in various ways. For practiced subjects, the time to answer items was an approximately linear function of the number of abstract spatial dimensions on which the aerial view and the observer's orientation were consistent. Practice led to lower error rates and lower intercepts for the response-time functions. Subject's ability correlated with the linearity of their response-time functions suggesting that lower ability subjects fail to code one or more spatial dimensions. A model specifying serial, self-terminating comparison of abstract spatial dimensions is proposed as an ideal which subjects approach after practice.     

APPLICATIONS OF SELF-CONTROL PROCEDURES BY CHILDREN: A REVIEW

Self-control procedures as used by children to affect their own behavior were reviewed. Particular emphasis was placed on self-instruction, self-determined criteria, self-assessment, and self-reinforcement. Self-punishment, comprehensive programs, and innovative self-control procedures (distraction and restatement of contingencies) were also evaluated. Basic effectiveness, comparisons with similar externally imposed interventions, maintenance, and the augmental value of the procedures were assessed. Important problems for future research were identified.     

On defining necessity in terms of entailment

In their book Entailment, Anderson and Belnap investigate the consequences of defining Lp (it is necessary that p) in system E as (pp)p. Since not all theorems are equivalent in E, this raises the question of whether there are reasonable alternative definitions of necessity in E. In this paper, it is shown that a definition of necessity in E satisfies the conditions { _E Lpp, _EL(pq)(LpLq), _E pLp} if and only if its has the form C ₁.C₂ .... C_np, where each C _iis equivalent in E to either pp or ((pp)p)p.     

Naming cAsE aLtErNaTeD words

A dual-route approach was used as an initial framework to examine the relation between presentation format and lexical processing in a naming task. In Experiments 1 and 3, words were presented in lowercase versus case-alternated format. Presentation format interacted with word frequency and regularity: For irregular words (e.g., pint), case alternation was additive with frequency, whereas for regular words (e.g., mint), case alternation and frequency interacted. Experiment 2 dissociated the locus of case-alternation effects from those of stimulus intensity. Stimulus intensity was additive with frequency and regularity, suggesting that whereas stimulus intensity affects encoding, case alternation affects lexical processing at a postencoding stage in the word recognition system. It was concluded that a dual-route approach provides a suggestive but incomplete account of how case alternation influences lexical processing. As an alternative to a dual-route approach, we show that the present results can be addressed and successfully simulated using an implemented version of Norris's (1994) multilevel model.     

Development of Adolescent Problem Behavior

The developmental model of adolescent antisocial behavior advanced by Patterson and colleagues (e.g., Patterson, Reid, & Dishion, 1992) appears to generalize the development of a diverse set of problem behaviors. Structural equation modeling methods were applied to 18-month longitudinal data from 523 adolescents. The problem behavior construct included substance use, antisocial behavior, academic failure, and risky sexual behavior. Families with high levels of conflict were less likely to have high levels of parent–child involvement. Such family conditions resulted in less adequate parental monitoring of adolescent behavior, making associations with deviant peers more likely. Poor parental monitoring and associations with deviant peers were strong predictors of engagement in problem behavior. These constructs accounted for 46% of the variance in problem behavior. Although association with deviant peers was the most proximal social influence on problem behavior, parental monitoring and family factors (conflict and involvement) were key parenting practices that influenced this developmental process.     

Trends in community mental health programming

One hundred-seventy-three mental health centers responded to a survey inquiring about allocation of staff time for mental health services and about the availability of an array of services at present, 3 years previous, and 3 years hence. The data reflect an emphasis upon reactive services as opposed to those considered proactive, and on services directed to individuals as opposed to other groups. However, this emphasis seems to be changing. Future projections call for a de-emphasis on individual reactive programs and increased emphasis on programs directed toward families and small groups, and toward proactive programs directed to the communities-at-large. Data about specific programs and services further suggest de-emphasis of services that involve the mental health professional and the client in direct interaction, and continued growth in services that can be delivered by less formally trained mental health workers or volunteers.     

Effects of training in rapid decoding on the reading comprehension of adult ESL learners

We report an experimental investigation of the effects on comprehension of increasing the decoding speed of three adult learners of English as a Second Language (ESL). Participants were taught to read lists of 25 difficult words in isolation until they could read the entire list at a mean rate of not more than 1.5 secs per word. They were then asked to read passages containing these words. Decoding speed and accuracy measures, for both the word lists and passages, and passage comprehension measures, were obtained. In a temporally contiguous within-subjects repeated trials reversal design, decoding training on isolated words was shown to be associated with significant increases in decoding speed and accuracy both in isolation and context, and improvements in the participants' comprehension. With all participants rate and accuracy gains in context were maintained in the final reversal phase, though the comprehension score gains did not. These results are discussed in terms of their implications for a decoding sufficiency hypothesis.     

Training direct service staff in congregate settings to interact with people with severe disabilities: A quick,effective and acceptable program

An area of traditional as well as recent concern in congregate settings for people with severe disabilities is ensuring frequent social interactions between direct service staff and individuals who live in the residences. This study evaluated a program for training staff to interact frequently and positively across clients while in group situations in living units. The program involved a short classroom instructional session encompassing less than 1 h, followed by a maximum of 4 brief on-the-job observations and feedback sessions. Results indicated interaction rates of all 9 participating direct service staff increased above a normative criterion rate while participating in the training program. All staff also increased the proportion of their social interactions with clients that were positive in nature, and 6 of the 9 staff increased their distribution of interactions across clients. The improved interaction performances occurred when staff were provided with immediate on-the-job feedback regarding their performances as well as when provided with delayed feedback. Acceptability measures indicated the training program was well received by staff, although program components also were noted that may have affected staff acceptance differentially. Directions for future research are suggested in regard to further evaluating and increasing staff acceptance of effective training procedures.