Six experiments investigated how changes in stimulus speed influence subjective duration. Participants saw rotating or translating shapes in three conditions: constant speed, accelerating motion, and decelerating motion. The distance moved and average speed were the same in all three conditions. In temporal judgment tasks, the constant-speed…

The intriguing possibility has emerged that the mechanisms processing information concerning different attributes might arrive at incompatible conclusions, so that stimuli are perceived which have paradoxical properties. This study demonstrated just such a situation. (Author/RK)

It is much easier to look for an unfamiliar character (such as an upside down A) embedded among familiar ones than to look for a familiar character (A) among unfamiliar ones. Furthermore, the nature of the background seems more important toperformance than the nature of the target. (Editor)

The divergent predictions of 2 models of dual-task performance are investigated. The central bottleneck and central capacity sharing models argue that a central stage of information processing is capacity limited, whereas stages before and after are capacity free. The models disagree about the nature of this central capacity limitation. The…

Some task variables that influence sentence coding, and the ways in which those influences appear to be manifested in performance were outlined. Trends in empirical data were examined as evidence for two classes of coding strategies. (Author/RK)

Three experiments are reported that were designed to delineate the properties of the stimulus encoding stage in reaction time tasks of varying stimulus-response compatibility. (Editor)

Authors examines the limits of selective attention during early stages of information processing. (Author/RK)

The present investigation was undertaken to study the relation of one component of intonation or stress, namely, rhythmic temporal patterns, to the production of utterances.It is hypothesized that the rhythmic schema of an utterance contains information that delimits the possible syntactic forms of that utterance. (Author)

There is a conflict in the literature on selective attention. Five experiments were conducted to resolve this conflict, and all involved a comparison of tachistoscopic recognition when alternatives were either presented beforehand or not. (Editor/RK)

An experiment was designed to examine the contribution of phonetic information in the processing of words in tachistoscopic recognition masking. (Editor)

Subjects were required to discriminate previously learned "standard" versions of angular shapes from randomly perturbed "distrator" versions that varied in similarity to the standard. (Editor)

Two new experimental operations were used to distinguish between auditory and phonetic levels of processing in speech perception: the first based on reaction time data in speeded classification tasks with synthetic speech stimuli, and the second based on average evoked potentials recorded concurrently in the same tasks. (Editor)

The processing-capacity and arousal-level effects on choice between computer-generated "melodies" differing in complexity were compared in a divided-attention situation. (Editor)

To determine whether perceptual asymmetries for faces occur at early or late stages of stimulus analysis, subjects compared the members of a pair of faces which appeared in the right or left visual field, either to each other or to a previously presented sample. (Editor)

When shown a pair of digits and asked to select the larger of the two, subjects make their choice more quickly as the numerical difference between the digits increases. Presents and tests a semantic coding model that can explain this and all previous results. (Editor)