A new hypothesis about the role of focused attention is proposed. The feature-integration
theory of attention suggests that attention must be directed serially to each stimulus in a …

Used 2 tasks to elucidate the nature of selective attention to individual stimuli:(a) focusing, in
which 1 stimulus was classified against 3 others; and (b) condensation, which required the …

Conducted 4 experiments with 108 volunteers (aged 18-42 yrs) to test object-, discrimination-
, and space-based theories of visual attention. In each experiment, Ss were presented with …

Examined the effects of perceptual grouping on search for targets defined by separate
features or by conjunction of features. The author and G. Gelade (see record 1980-04685 …

Six experiments with 53 college students explored the effect of a previous level of
processing on current processing of visual scenes. A robust level-readiness effect supported …

The influence of the Gestalt grouping principles of similarity, closure, and proximity on the
size of the response-compatibility effect was examined in a focused attention task. In three …

Perception seems so effortless and instantaneous, however rich and varied the visual scene
may be, that it is hard to imagine the complexity of the analysis on which our experience …

Visual objects are perceived correctly only if their features are identified and then bound
together. Illusory conjunctions result when feature identification is correct but an error occurs …

This article addresses 2 questions that arise from the finding (eg, W. Prinzmetal et al; see
record 1986-26854-001) that visual scenes are first parsed into visual features:(a) the …

A unified theory of visual recognition and attentional selection is developed by integrating
the biased-choice model for single-stimulus recognition (RD Luce, 1963; RN Shepard …