Title | Sex differences in the end-state comfort effect in pre-adolescent children. |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | Scharoun, SM, Robinson, LE, Logan, SW, Bryden, PJ, Brock, SJ, Fischman, MG |
Journal | Hum Mov Sci |
Volume | 57 |
Pagination | 244-250 |
Date Published | 02/2018 |
ISSN | 1872-7646 |
Abstract | There has been recent interest in the developmental trajectory of the end-state comfort effect (ESCE) in young children. However, potential sex differences have yet to be examined in the overturned glass task. We examined the ESCE using this task in a large sample (N=232) of typically-developing elementary school children (111 girls, 121 boys) in grades 1-5 (approximately 7-11years old). We sought to determine whether there were similarities or differences in performance between boys and girls. Children picked up an overturned drinking glass from a table, turned the glass upright, and then poured water into it from a measuring cup. Three trials were performed, and the use of an initial awkward thumb-down grip to pick up the glass was taken as evidence for the ESCE. There were non-significant main effects for sex and grade, but a significant interaction between factors. Boys increased in sensitivity to end-state comfort across the five grades while girls showed a decrease from grades 1-3, followed by an increase between grades 3 and 5. Taken together, the results indicate the presence of adult-like motor planning for the overturned glass task by the 4th grade (i.e., age 10), but also suggest the presence of a motor reorganization in girls, at around the 2nd or 3rd grade (i.e., 8 or 9years of age). |
DOI | 10.1016/j.humov.2017.09.001 |
Alternate Journal | Hum Mov Sci |
PubMed ID | 28985971 |