This collection on speech research presents a number of reports of experiments conducted on neurological, physiological, and phonological questions, using electronic equipment for analysis. The neurological experiments cover auditory and phonetic processes in speech perception, auditory storage, ear asymmetry in dichotic listening, auditory perception and processing, cerebral reaction to speech signals, and the relationship between speech and reading disability. The physiological experiments examine articulatory muscles, control of tongue position, laryngeal muscles, velopharyngeal mechanism, and vocal tract size normalization. The phonological investigations consider tense-lax features in some English vowels and "Vowel Duration as a Cue to the Perceptual Separation of Cognate Sounds in American English." One report covers the latest development in the Haskins electronic system for collecting and processing data in research. (VM)