In this investigation of monocular perception of egocentric distance, the authors advocate the necessity of a perception-action approach because calibration is intrinsic to definite distance perception. A helmet-mounted camera and display were used to isolate optic flow generated by participants' head movements toward a target, and participants' reaches to place a stylus either in a target hole...

The authors describe 3 human spatial navigation experiments that investigate how limitations of perception, memory, uncertainty, and decision strategy affect human spatial navigation performance. To better understand the effect of these variables on human navigation performance, the authors developed an ideal-navigator model for indoor navigation whose optimizing algorithm uses a partially obse...

In this study, the authors examined body image perception and body mass index (weight (kg)/height (m)(2)) among race-gender groups in a biracial (Black-White) population of young adults in Bogalusa, Louisiana. A mail-out survey was completed in 1994 by 3,698 (65%) participants aged 18.5-35 years in the Bogalusa Heart Study (mean age = 27.6 years). As part of the survey, body image perception wa...

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The authors investigated the mechanical basis of length perception through dynamic touch using specially designed rods in which the various moments of mass distribution (mass, static moment, and rotational inertia) were varied independently. In a series of 4 experiments, exploration style and rod orientation were manipulated such that the relative salience of moments of mass distribution varied...

OBJECTIVES Cochlear implants are a standard therapy for deafness, yet the ability of implanted patients to understand speech varies widely. To better understand this variability in outcomes, the authors used functional near-infrared spectroscopy to image activity within regions of the auditory cortex and compare the results to behavioral measures of speech perception. DESIGN The authors studi...

Gray and colleagues make two central claims in their target article. The first is that people fundamentally understand morality in terms of a moral dyad consisting of an intentionally harming agent and a suffering patient; the second is that morality necessarily involves the process of perceiving minds. Both claims underlie the broader thesis that mind perception is the essence of morality, but...