Millisecond timing on the IBM PC/XT/AT and PS/2: A review of the options and corrections for the Graves and Bradley algorithm

Eleven methods of obtaining millisecond timing on the IBM microcomputer family are briefly reviewed. In our view, the approach recommended by Smith and Puckett (1984) has the fewest limitations, but it must be modified to prevent rare, yet unacceptable, errors. The modified algorithm has been presented for Turbo Pascal, C, and in the present paper, for BASIC and QuickBASIC.     

Measuring the quality of residential care

Administrative personnel require objective, reliable and valid information in order to monitor the effects of allocating resources to different components of the service that they are providing. The initial problem is to define and measure the dependent variable—the ‘quality of care’ —against which the effects of changing various independent variables can be evaluated. The paper describes an attempt to use the operant conditioning model as a basis for constructing such a measure of the quality of care provided in residential settings for severely mentally handicapped people. The rationale for adopting this model is described, against a background of other studies in which the same problem has been addressed. The hypothesis, the tasks generated, and the methodological problems encountered, are outlined and discussed.

A subsequent paper will present the results obtained when using the method to measure the quality of care, so defined, in two residential units for severely mentally handicapped children.     

A chamber for separating visual and physical prey access from predators

A chamber is described that provides automated separation of various phases of depredation dynamics. Two solenoid actuated doors control visual and physical access to prey items. A lever operandum is programmable to require differential response outputs by the predator. Search lever responses open one door and allow detection which may then be followed by pursuit lever responses and ultimate access for capture. The chamber is suitable for such medium sized predators as foxes and coyotes.     

THE RIGHT TO EFFECTIVE BEHAVIORAL TREATMENT

We propose that individuals who are recipients or potential recipients of treatment designed to change their behavior have the right to a therapeutic environment, services whose overriding goal is personal welfare, treatment by a competent behavior analyst, programs that teach functional skills, behavioral assessment and ongoing evaluation, and the most effective treatment procedures available.     

Order of question presentation and correlation between judgments of comparative and own risk

Unrealistic optimism is often assessed using a single question asking for an estimate of comparative risk. However, it has been proposed that individuals treat such a question essentially as though it were only about their own risk. This proposal leads to the prediction that, when the questions about own risk and comparative risk are asked in sequence, the correlation between the resulting estimates should be lower if the question about own risk comes first than if the question about comparative risk comes first. This prediction was tested using a student sample (N=68). Participants answered the two types of question in sequence, with order of presentation being counterbalanced. Results were in accord with the prediction. Possible reasons are advanced for individuals' answering questions about comparative risk as if the questions concerned their own risk.     

Phonological encoding in the silent speech of persons who stutter

The purpose of the present study was to investigate the role of phonological encoding in the silent speech of persons who stutter (PWS) and persons who do not stutter (PNS). Participants were 10 PWS (M=30.4 years, S.D.=7.8), matched in age, gender, and handedness with 11 PNS (M=30.1 years, S.D.=7.8). Each participant performed five tasks: a familiarization task, an overt picture naming task, a task of self-monitoring target phonemes during concurrent silent picture naming, a task of monitoring target pure tones in aurally presented tonal sequences, and a simple motor task requiring finger button clicks in response to an auditory tone. Results indicated that PWS were significantly slower in phoneme monitoring compared to PNS. No significant between-group differences were present for response speed during the auditory monitoring, picture naming or simple motor tasks, nor did the two groups differ for percent errors in any of the experimental tasks. The findings were interpreted to suggest a specific deficiency at the level of phonological monitoring, rather than a general monitoring, reaction time or auditory monitoring deficit in PWS. Educational objectives: As a result of this activity, the participant should: (1) identify and assess the literature on phonological encoding skills in PWS, (2) enumerate and evaluate some major psycholinguistic theories of stuttering, and (3) describe the mechanism by which defective phonological encoding can disrupt fluent speech production.     

The effects of a seatbelt-gearshift delay prompt on the seatbelt use of motorists who do not regularly wear seatbelts

A seatbelt-gearshift delay was evaluated in two U.S. and three Canadian vehicles using a reversal design. The seatbelt-gearshift delay required unbelted drivers either to buckle their seatbelts or to wait a specified time before they could put the vehicle in gear. After collecting behavioral prebaseline data, a data logger was installed in all five vehicles to collect automated data on seatbelt use. Next the seatbelt-gearshift delay was introduced. The results showed that the delay increased all 5 drivers' seatbelt use, and that the duration of the delay that produced relatively consistent seatbelt use varied across drivers from 5 to 20 s. When the device was deactivated in four of the five vehicles, behavior returned to baseline levels.     

A Grand Theory and a Small Social Scientific Community: Niklas luhmann in Slovenia

We analyse the reception of Niklas Luhmanns social metatheory in Slovenian social. The first part outlines the intellectual climate that prevailed in the decade before the post-socialist transition. The decline of the previously dominant Marxist ideology created space for other social theories. Luhmanns ideas were the most prominent among social macro theories in the initial phase. The second part describes variations in the reception of his ideas. The initial affirmative approach was upgraded by a number of more selective and critical approaches. The third part shows that, although his ideas are no longer quite so prominent, his work is both well recognized and firmly embedded in Slovenian social thought.     

Results of intensive stuttering therapy with adults who clutter and stutter

The purpose of this investigation was to report on the identification of adult clients who clutter and stutter, evaluate their response to a stuttering therapy program, and determine if speech measures typically used in evaluating therapy outcome are sufficiently sensitive indicators of change for clients who clutter and stutter. Results suggest that cluttering-stuttering subjects had a very positive response to stuttering therapy, but greater improvements may have been achieved with additional therapy time and expanded therapy goals. Results also indicate that pretreatment and posttreatment measures of articulatory rate may be a more sensitive measure of change for cluttering-stuttering clients.