In this study, a system was designed for monitoring learning progression and observing how an instructor directs a student's attention toward goals, such as landmarks and shorelines, on mobility routes. Results indicate the system was effective in monitoring the learning progression of 16 students (ages 3-14) with blindness. (Contains references.)…

This study compared effects of visual occlusion on the motor and spatial learning of 28 legally blind adult males, half due to acuity loss and half due to peripheral field restriction. For both groups, occlusion appeared neither to facilitate nor impede motor learning but did significantly impair acquisition of spatial relations. Results have…

Presents an acoustical model and evidence from four experiments that children with visual impairments use the buildup of low-frequency sound along walls to guide locomotion. The model differs from the concept of echolocation by emphasizing sound that is ambient, rather than self-produced, and of low frequency. (Author/CR)

A study of eight adults who use dog guides found four themes that described the experience of using a dog guide: increased confidence, increased independence, changed public interactions, and additional responsibilities or inconveniences. Most participants described their dogs as social "ice breakers" that led to increased interaction…

Comparison by 40 users of 2 technologies--Verbal Landmark and Talking Signs--that provide speech messages to hand-held receivers for blind travelers found that, on all measures, the Talking Signs system proved superior to the Verbal Landmark system. This was attributed to Verbal Landmark's more cognitively demanding technology. (DB)

In a series of experiments, canes of different lengths, weights, and weight distributions were assessed to determine the effect of these characteristics on various performance measures. The results indicate that the overall weight of a cane and the distribution of weight along a cane's shaft do not affect a person's performance, but accuracy does…

Russell C. Williams was a key figure in the progression of orientation and mobility from the Army's immediate response to the servicemen and women who lost their sight during World War II to a recognized profession delivering individualized instruction to visually impaired people throughout the world. Blinded in combat while serving in the U.S.…

There is a general sense today that constructivist teaching is not up to the task of preparing students for high-stakes exams. In this article, the authors describe a highly effective constructivist approach used to teach students in a learning situation that takes the meaning of "high stakes" to another level. They talk about teachers of "cane…

In children, concepts develop in a spiral, with the child at the center. A positive self-concept begins within a responsive caregiving environment. Concepts build upon one another. The more ideas and memories that a child has about the way the world and relationships work, the easier it is to develop further ideas. Once a child realizes, for…

Eighty-eight children (either totally blind or with residual vision) estimated directions between landmarks in a large scale layout of objects. Children experienced the layout either directly by walking around it or indirectly by examining a tactile map. Use of tactile maps considerably facilitated the performance of the blind children. (Author/DB)

This study investigated the relationship between use of light rapid or light rail transit (LRT) systems by persons with severe visual impairments and independence in orientation and mobility. It found that orientation and mobility training on LRT systems would resolve many of the difficulties that users encountered. Modifications to improve…

This article discusses ethical and legal issues faced by orientation and mobility (O&M) professionals, associated with informing clients with visual impairments about risks both during O&M instruction and after training. The article evaluates arguments against the disclosure of risks, and describes a computerized method of assessing risks.…

Four athletes who are blind tested the effectiveness of an end-of-the-lane signaling device for swimmers with visual impairments. Swimmers preferred the Aqualert II over the tap stick because it gave them a better idea of the location of the wall, more advanced warning, and allowed them to be more independent. (CR)

This case study discusses how a teacher of three elementary students with congenital blindness motivated her students to increase their mobility. The children were asked to pull a child-sized suitcase with wheels behind them in the hand that was not holding a cane. The successes of the strategy are described. (Contains two references.) (CR)

Describes ocular and other complications of diabetes that orientation and mobility instructors should consider in determining the most appropriate mobility training for persons with diabetes who are visually impaired. Compares the benefits of using dog guides and long canes in dealing with these various complications. (Author/CR)