TY - JOUR
T1 - A replication and extension of findings about the development of visual acuity in infants
AU - Goldblatt, Allen
AU - Strauss, Sidney
AU - Hess, Peter
N1 - Funding Information:
The purposes of the present study were to: (1) replicate the Gwiazda et al. methodology to determine whether we would obtain similar cross-sectional normative data, and (2) extend the cross-sectional findings by testing infants longitudinally. The importance of the replication and extension of the orig!nal study *This study is part of a larger research program and was supported by a grant from the Israeli National Academy of Sciences (Grant Number 6656000) to the first two authors. Peter Hess, a graduate student, collected the data for the experiment. We would like to express our appreciation to Richard Held who, by making his technique and some equipment available, enabled us to conduct these studies. We would also like to thank him for his comments on an earlier version of this paper. Thanks go to the nurses at the Shikun Bavli Tipat Chalav Center for their patience and help in all aspects of the research. Requests for reprints should be sent to Allen Goidblatt, Department of Psychology, Tel-Aviv University, Tel-Aviv (Ramat-Aviv), Israel.
PY - 1980/1
Y1 - 1980/1
N2 - A cross-sectional study and a longitudinal study were conducted on the development of visual acuity in infants from ages 14-50 weeks. The cross-sectional study was a replication of the Gwiazda et al. (1978) methodology, and our findings were quite similar to theirs. Testing 110 infants, visual acuity increased monotonically from 2.9 cycles per degree at 17 weeks of age to 8.6 cycles per degree at 45 weeks of age. The longitudinal study was conducted with 15 infants who were retested once using the same testing technique. Visual acuity development was in the expected direction, and in cases where there was change to a higher level of acuity it was generally toward the next highest level.
AB - A cross-sectional study and a longitudinal study were conducted on the development of visual acuity in infants from ages 14-50 weeks. The cross-sectional study was a replication of the Gwiazda et al. (1978) methodology, and our findings were quite similar to theirs. Testing 110 infants, visual acuity increased monotonically from 2.9 cycles per degree at 17 weeks of age to 8.6 cycles per degree at 45 weeks of age. The longitudinal study was conducted with 15 infants who were retested once using the same testing technique. Visual acuity development was in the expected direction, and in cases where there was change to a higher level of acuity it was generally toward the next highest level.
UR - http://www.scopus.com/inward/record.url?scp=0019190367&partnerID=8YFLogxK
U2 - 10.1016/S0163-6383(80)80021-X
DO - 10.1016/S0163-6383(80)80021-X
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0019190367
SN - 0163-6383
VL - 3
SP - 179
EP - 182
JO - Infant Behavior and Development
JF - Infant Behavior and Development
IS - 1
ER -