title: The effect of age on the haptic horizontal-vertical curvature illusion with raised-line shapes.
abstract: In the present study, we investigated the effect of age in the haptic horizontal-vertical curvature illusion from adolescence to old age. Blindfolded participants explored raised-line convex curves with one finger and two fingers (Experiment 1). They judged the size of the curves (horizontal/vertical), using two sliding rulers. The results suggest that young and older haptic explorers overestimated the vertical. Adolescents did not show the haptic illusion. In Experiment 2, adolescents performed the task visually showing a stronger horizontal-vertical illusion. The findings suggest that the illusion develops later in touch than in vision. The theoretical implications of the results are discussed.
authors.affiliation: Department of Basic Psychology II, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain. mballesteros@psi.uned.es
authors.forename: Soledad
authors.initials: S
authors.lastname: Ballesteros
authors.forename: Julia
authors.initials: J
authors.lastname: Mayas
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Reales
authors.forename: Morton
authors.initials: M
authors.lastname: Heller
mesh_terms: D000293:Adolescent; D041923:Adolescent Development / Q000502:physiology*; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007088:Illusions / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D013028:Space Perception / Q000502:physiology*; D055698:Touch Perception / Q000502:physiology*; D055815:Young Adult