Uncovering Information Needs for Independent Spatial Learning for Users Who Are Visually Impaired
Nikola Banovic, Rachel L. Franz, Khai N. Truong, Jennifer Mankoff, Anind K. Dey · 2013 · Proceedings of the 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS) · doi:10.1145/2513383.2513445
Summary
This paper presents two studies examining how visually impaired individuals learn about their environments and build cognitive maps — the mental representations of spatial relationships that sighted people largely construct through casual visual observation. Study 1 involved semi-structured interviews with 9 visually impaired participants (ages 30s-66, all legally blind) combined with think-aloud observations while exploring two unfamiliar outdoor locations, plus a focus group with 6 orientation and mobility (O&M) specialists from CNIB. Study 2 recruited 8 visually impaired participants (ages 43-72, all legally blind) for two tasks: a knowledge assessment of frequently navigated environments, and an in-situ exploration of a familiar environment where a researcher simulated a navigation aide providing push interactions (unsolicited information about nearby places) and pull interactions (information requested by the participant). The research addresses a significant gap: while much prior work has focused on turn-by-turn navigation, little has examined how visually impaired people independently learn and build comprehensive knowledge about their environments beyond just getting from point A to B.
Key findings
Study 1 uncovered four types of spatial information that visually impaired individuals progressively learn: (1) high-level information — general layout, grid patterns, neighbourhood character, gathered before visiting; (2) safety information — obstacles, traffic patterns, sidewalk conditions, elevation changes, taught with high precision by O&M specialists; (3) navigation information — landmarks, paths, and spatial relationships between places; and (4) places and activities of interest — businesses, services, and what they offer. Five contextual factors affect this learning: O&M proficiency, navigation aides used, environmental changes, frequency of visits, and environment familiarity. Study 2 revealed that participants learn about places not only for immediate needs but also to enable future opportunities — a participant remembered a clothing store learned in 2004 and used it two years later. Participants strongly preferred push interactions (being told about nearby places proactively) over pull interactions, because they often did not know what was around them to even ask about. However, they wanted control over when and how much information they received, and all agreed that audio cues could replace spoken descriptions to reduce information overload.
Relevance
This research fundamentally reframes the challenge of accessible navigation. Most assistive navigation technologies focus narrowly on guiding users from origin to destination, but visually impaired individuals also want to build rich cognitive maps of their environments — to know what shops are nearby, what services are available, and what opportunities exist, just as sighted people naturally absorb this information through casual observation. The distinction between push and pull information interactions is particularly actionable for designers: visually impaired users need systems that proactively share contextual information, not just respond to queries. The finding that people learn spatial information for future use — not just immediate needs — challenges the assumption that navigation tools should only serve in-the-moment tasks. For accessibility practitioners, this work highlights that independence means more than getting to a destination; it means having the environmental knowledge to make informed choices about where to go.
Tags: visual impairment · spatial learning · navigation · wayfinding · orientation and mobility · cognitive map · assistive technology · blindness