Five trainable mentally handicapped students (15 through 20 years old) attending a private residential school were taught to follow eight standardized travel patterns in response to specified instructional commands. (Author/SW)

The article describes the development of the Nottingham Obstacle Detector (NOD), an ultrasonic handheld aid designed to help visually handicapped persons detect obstacles as they travel. Results of six mobility tasks are explained to point out definite advantages of NOD. (Author/CL)

Using a theoretical model of walking with the cane, drop off detection in the touch technique was analyzed for usefulness with the visually impaired. Sufficient cane length for detecting curb drop offs was found to be measurable and a chart was generated to enable the practitioner to determine cane length easily. (Author)

The authors interviewed and videotaped diabetic adults with visual impairments about their perceptions of orientation and mobility (O&M) services that they had received. The visual impairments of these middle-aged adults ranged from totally blind to low vision. The interview questions focused on demographic information about the interviewees, the…

The sensitivity of 10 moderately mentally retarded and 10 nonretarded adults to changes in environmental spatial structure with and without visual-environmental clues was examined. Both groups showed similar sensitivity to perspective changes without visual cues, but only the nonretarded demonstrated increased accuracy with the visual cues.…

The article describes studies of effectiveness of a secondary task as a measure of the blind mobility information processing workload. Secondary task performance is shown to be a useful index of effects of preview and route difficulty, as well as perceptual and cognitive demands of different mobility aids. (Author/CL)

The development of the Sonic Pathfinder, a new electronic travel aid, is described. The aim has been to produce an aid that gives the user useful information for safe, stress-free travel rather than to provide an electronic surrogate for vision. (Author/CL)

This study evaluated effects of hand position when the long cane is used to assist travel for individuals with severe visual impairments. Subjects were 15 mobility instructors. The study found that the style with which one holds the cane when using the touch technique does affect detection distance for both surface and object preview. (DB)

A program combining classroom and community training in bus-riding skills to developmentaly disabled adults featured slide presentations, role playing, and performance in the natural environment. Test trials showed that all Ss learned necessary bus-riding skills and maintained their performance throughout the follow-up period of at least one year.…

The author discusses ways in which miniatures and schematic drawings can help blind persons deal with information provided by sonicguide. (CL)

Measurement of stress in nonvisual travel was attempted with both an electromyograph and a galvonic skin response unit in four travel situations. Results revealed significantly greater stress response when unexpected contact with objects was made than with expected contacts and street crossings. Instructors' intervention also increased stress.…

Eight learning disabled males (16 to 17 years old) participated in a driver education unit via a visual response system, allowing students greater response and feedback. After the conclusion of the unit, all Ss scored above the criterion established by the Digest of Ohio Motor Vehicle Laws. (CL)

Use of the Sonicguide, a binaural sensory aid, by a quadraplegic, totally blind 18-year-old student is described. The rationale for training, device adaptations, and the eventual use of the device as a primary mobility aid in areas familiar to the student are explained. (Author/MC)

Two articles discuss the compatibility of the Sonicguide, long cane, and guide dogs in increasing the mobility of visually impaired individuals. (PHR)

Three blind adults were trained in a 7-step structured procedure for asking questions to solicit information concerning the location of businesses they wished to visit. Completeness of information obtained increased dramatically with the use of this procedure. (Author/DB)