Interpair acoustic and formal similarity are detrimental to verbal discrimination learning when manipulated individually; even larger performance decrements result when they are allowed to covary. (Authors)

Results of three experiments provided no substantial evidence of selective encoding. (Authors/MB)

Study explored the possibility that the savings residual for items forgotten from long-term memory is comprised of acoustic information. (Authors)

Presents specific techniques for lectures and demonstrations in acoustics for deaf students. (SK)

Summarized are general procedures for and student reactions to three different science units for primary students. Topics included are timing things, yogurt pot telephones, and parachutes. (DC)

The perception of syllable-initial stop consonants as voiced or voiceless was shown to depend on prevailing rate of articulation. Reducing articulatory rate of a precursor phrase causes a greater proportion of test consonants to be identified as voiced. Timing should be regarded as intrinsic to the acoustical specifications of phonetic events.…

Physical, social, and psychological environments have had substantial impact on the hearing efficiency of youth. During the neonatal, preschool, and school years, environmental factors have exposed youth to auditory damage. School administrators can plan and should implement acoustical measures in the design of their school buildings. (JN)

The magnitudes and patterns of two-point difference limens (DL) of the tongue were studied in children with and without articulation errors. Many children with misarticulation of /r/ had DLs that differed in magnitude and pattern from those of children with normal articulation and those with misarticulations of /s/. (NCR)

Reports on two experiments, one performed on infants, the other on adults, designed to examine the issue of categorical perception of speech contrasts in infants in relation to linguistic processing and the innateness theory of speech perception. (AM)

Notes that English coronal stop deletion is constrained by the preceding segment, so that stops and sibilants favor deletion more than liquids and nonsibilant fricatives. Suggests the existence of an attractive theoretical integration of categorical and variable processes in the grammar to account for the constraint. (26 references) (Author/CK)

Many libraries have noise problems that can't be fixed with ceiling and carpet treatments, physical arrangement, or sound barriers. This study at Henderson Community College (Henderson KY) attempted to confirm results from an earlier study suggesting that reducing light levels led to reduced noise. The data showed mixed results, but overall the…

Presented is an experiment which provides a study both of the end correction involved with open pipes and also of the effect that varying the size of the tone hole in the pipe has on its fundamental frequency. Discussed are equipment, formulas, background, and methods. (CW)

An outdoor activity that demonstrates the Doppler effect is described. Class predictions are verified by actual involvement in collecting data. Presented is a method of analyzing data. Safety concerns are discussed. (KR)

Included are nine science activities and questions to be used in the physics classroom. Topics include light, sound, force, radio waves, inertia, friction, and levers. (KR)

Presents two demonstrations: heatwave focusing by concave reflectors and wave speed on a string. Describes the apparatus, and procedures for the demonstrations. (YP)