Data analysis of 134 twin pairs from the Colorado Reading Project found that approximately 40 percent of the deficit observed in disabled readers is because of genetic factors, 35 percent because of environmental influences shared by twin pairs, and 25 percent because of environmental factors unique to the individual and/or error variance.…

The voice quality, breathiness, hoarseness, and laryngeal strain of 20 profoundly deaf and 5 normal-hearing children, age 5-19, were judged. Findings suggest that overall prediction of voice quality cannot reliably be based on glottal parameters and judged voice deviations, although severe cases of deaf voice deviations may be detectable.…

An auditory masking procedure was successfully used to identify those speech handicapped children who would maintain or improve the accuracy of speech production during a three-week treatment break. Subjects were 28 primary grade children with relatively low levels of phoneme acquisition. Results have implications for scheduling and treatment…

Holland's (1973) theory of vocational choice proposes a typology of, and a match between, people and occupations. The Self Directed Search (SDS) can be used to assess people's occupational orientation types. To assess the construct validity of Holland's theory of occupational preferences, 171 female industrial workers participated in a study,…

This chapter outlines the theory of cost-benefit analysis and discusses its application to determining the cost-benefit of instructional development projects. Three types of applications are discussed: (1) descriptive applications of single projects; (2) predictive studies of proposed projects; and (3) comparative analysis of alternative projects…

Three studies investigated comfortable loudness levels with particular reference to their application to hearing aid gain prescriptions. The studies, involving 33 normal hearing adults and 77 adults with hearing impairments, suggest that comfortable loudness levels for continuous speech bands can be estimated rather accurately, quickly, and with…

Statistical analyses of scores on subtests of the Intelligence Test for Visually Impaired Children were done for two groups of children, either with or without usable vision. Results suggest that the battery has differential factorial and predictive validity. (Author/DB)

This study was designed to help students decide whether or not to register for a general chemistry course. High school grade point averages (GPAs) and American College Testing (ACT) scores were obtained on over 600 students from New Mexico State University and were entered into correlation analysis with chemistry grades. A "Chemistry…

This study attempts to respond to the suggestions of Stewart and Jones and the criticisms of Sattler and Buckhalt by assessing the precision of the Slosson Intelligence Test (SIT) in predicting Wechsler Intelligence Scale for Children-Revised (WISC-R) scores with a population of restricted range (gifted children), and examining the consistency of…

Three of Guilford's measures of ideational fluency, and the Concept Mastery Test, a traditional verbal intelligence test, were correlated with a creative activities inventory. There were no significant differences between the predictive ability of ideational fluency and verbal intelligence measures. (Author/CP)

Blind vocational rehabilitation clients (N=100) were administered the Displacing and Turning tests of the Minnesota Rate of Manipulation Tests after three practice trials. Subjects essentially scored lower than people with normal vision, with their means on both tests being at the first percentile of the norms for sighted persons. (Author/DB)

For the purposes of this study, which examines the upward mobility of educational administrators, "upward mobility" is defined as a function of a combination of professional attractiveness and inside sponsorship operating in a paternalistic environment. The study tested four hypotheses within paternalistic school environments: (1)…

Three groups of adolescents (n=82) who received treatment for emotional disturbances as children were compared on four predictive indicators: organic problems, family problems, conduct disorders, and academic problems. Using childhood treatment data, significant differences were found between the aggressive group and one or both of the comparison…

The prereading and reading performance of 370 predominantly Hispanic, bilingual school children was followed for 6 years. A 5-test Screening Index misclassified many failing readers but accurately identified children who eventually read well. Predictor tests administered at beginning of first grade showed significant correlations with reading at…

This study examined the development of phonological and reading skills in 171 students from the beginning of first grade (Time 1) to the end of second grade (Time 4). The study found that reader group membership (nondisabled, reading disabled, or poor reading) at Time 4 could be very accurately predicted from students' Time 1 scores. (Author/DB)