As a result of findings of a previous study, this study, which sought to program preschool subjects to wait one minute for reinforcement, used pause-building procedures before delay conditions were started. The children, 3- to 5-year-olds, were designated either Baseline (control) subjects (n=3) or Programmed (experimental) subjects (n=5). Though…

Gas flow patterns at a sampling nozzle are described in this presentation for the 12th Conference on Methods in Air Pollution and Industrial Hygiene Studies, University of Southern California, April, 1971. Three situations for sampling velocity are illustrated and analyzed, where the flow upstream of a sampling probe is: (1) equal to free stream…

This document is a report on a study of errors in spelling which high school students in 48 states, the District of Columbia, and Canada have made in their writing, with special reference to the words most frequently misspelled, their relative frequency, and the kinds of spelling errors which the student made. An analysis of the different words…

Analysis of the frequency and nature of error and post-error responses in serial choice reaction times of 84 children between 5 and 12 years essentially replicate findings in adults. (Author/MP)

This report is a review of reliability data on the PPVT obtained from 32 research studies published between 1965 and 1974. For average children in the elementary grades, and for retarded people of all ages, PPVT scores remained relatively stable over time and there was close equivalence between alternate forms. (Author)

Some misconceptions about "squares" encountered among college students as they attempt to master appropriate subject matter in preparation for teaching elementary grades are presented. (MN)

Two error analyses (one on consonants and one on vowels) underscore the importance of non-visual cognitive processes in reading. (RL)

The authors analyze student work in solving linear equations, categorize and discuss typical errors, and present resulting implications on instruction. (MN)

This paper critiques Wolfgang, Figlio, and Sellin's "Delinquency in a Birth Cohort," (1972) which is the analysis of the recorded delinquent careers of a cohort of nearly 10,000 boys in Philadelphia, by outlining the consequences of an inadequate and cursory use of tabular analysis. (Author/RM)

This experiment attempted to discover under what circumstances, if any, children use whole words, syllables, letter clusters, or letters as units during reading. The results indicated that syllables and letter clusters are probably not processed as units for any type of word, but there was slight evidence that letters may function as units,…

This study was designed to replicate and extend Roberts' (1968) efforts at classifying computational errors. 198 elementary school students were administered an 84-item arithmetic computation test. Eight types of errors were described which led to several tentative generalizations. (Editor/RK)

Examines perspectives on language transfer in the light of a body of data regarding a beginning learner of French whose native language was English but who also had some knowledge of Irish, Latin, and Spanish. (Author/CB)

Searched article, book, and dissertation entries in reference lists in one volume year for two counseling journals, for accuracy. Found 44.9 percent of the verified references contained at least one error. Some errors could be explained as typographical. Concludes that with reference list preparation, writers in the counseling field seem to be…

Based on data from two experiments, this article attempts to assess degree to which people differ in interpretations of questions referring to library services and the implications for interpreting survey results. Sources of error in questionnaire research--sampling, response (question interpretation, response decision, category choices)--are…

Reports a class exercise which requires students to recalculate the Chi-squares, t-tests, and one-way ANOVAs found in published psychological research articles. Describes students' reaction to the exercise and provides data on the 13% error rate they discovered. (Author/JDH)