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This study explores microgenesis in bilateral leg coordination of 5-month-old infants using a new setup. The experiment investigates alternating, single kick, and simultaneous kick abilities. The research involves a yoked or free condition with baseline, acquisition, and extinction phases for different experimental groups. Results reveal traces of coordination improvement, higher coupling functions in the yoke group, and evidence of "on-line" learning. The study sheds light on the development of embodied cognition in infants through motor tasks.
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Date: June 26, 2007 Room: 8-405 Instructor: Mafuyu Kitahara Material: Thelen, E. (1995) “Time-scale dynamics and the development of an embodied cognition” in R. Port and T. van Gelder (eds.) Mind as motion, Cambridge: MIT Press English Theme 45 pp.91-94
Novel Task • Microgenesis: shift evolved from new setup • Target: bilateral leg coordination • At 5months: alternating, single kick, simultaneous kick (less stable) • Can baby find it?
Experiment • Conjugate reinforcement • attractive mobile • effective kick -> more move • Yoked or Free condition • Baseline (4min) • Acquisition (10min) • Extinction (2min) • YYF, FYF (yoke group) • FFF, YFF (free group)
Result(1) • Trace of LR legs baseline acquisition
Result (2) • Coordination (r^2) • higher for yoke • “on-line” learning • Back to normal • Coupling function