We extend a unified and easy-to-use approach to measurement error and missing data. In our companion article, Blackwell, Honaker, and King give an intuitive overview of the new technique, along with practical suggestions and empirical applications. Here, we offer more precise technical details, more sophisticated measurement error model…

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.…

Describes and compares eight methods of estimating the parameters of the Zipf distribution. (CLB)

A rudimentary description of Markov Chains is presented in order to introduce its use to describe and to predict authors' movements among subareas of the discipline of ethnomusicology. Other possible applications are suggested. (Author)

The study examined the relationship between 28 segmental and suprasegmental acoustic parameters of speech production and measures of speech intelligibility for 40 severely to profoundly hearing-impaired persons (mean age 21 years). Findings support the tractability of employing selected acoustic variables for the estimation of speech…

Describes two experiments that assessed young children's understanding of the characteristic uncertainty in the physical nature of random phenomena as well as the unpredictability of outcomes. (HOD)

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…

Proposes an analytical conceptual framework and an instrument (Teacher Implementation Autonomy Profile) to reveal teacher autonomy in curriculum implementation. The instrument disclosed components describing expected autonomy and differentiated types of curricula. Sample analysis suggests an operative interpretation of autonomy, indicating that…

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…

Research findings were reviewed on the Auditory Visual Combined Discrimination Test, which can be used with severely and profoundly mentally retarded persons to assess basic position, visual, and auditory discriminations. The test was found to be reliable and predictive of client performance in classroom learning, language, and vocational tasks.…

This study investigated the relative importance of semantic, grammatical, phonological, and rapid naming abilities in predicting word identification skills in 200 children (grades 1-6) using correlation, factor analysis, multiple regression, and predictive outcome analysis techniques. Composite measures of these abilities correlated significantly…

This study had two purposes: to test the usefulness of partial order scalogram analysis with multivariate response data; and to illustrate the multidimensional nature of suicide risk. A detailed introduction describes partial order scalograms, which locate respondents' profiles in a two-dimensional space (rather than on a unidimensional Guttman…

This paper examines some of the problems that arise when conducting multivariate analyses with incomplete data. The literature on the effectiveness of several missing data procedures (MDP) is summarized. The most widely used MDPs are: (1) listwise deletion; (2) pairwise deletion; (3) variable mean; (4) correlational methods. No MDP should be used…

The test-retest reliability and predictive validity of developmental quotients (DQs) derived from the Cattell Infant Intelligence Scale was assessed with 83 children with mental retardation, age 30 months or more. Scores were impressively stable on retest. DQs derived from the Bayley Scales of Infant Development were superior to Cattell DQs in…

Examines practices that encourage false negatives and false positives on licensing and certification tests designed to protect the public. Recommends increasing the amount of testing or raising the required passing score for repeat test takers. (FMW)