Excerpt volume: Crawling procedure & locomotor history

Crawling Example 1: Experimenter carrying baby, mom and experimenter at end of walkway, soft carpet crawling surface. Illustrates use of toys to lure baby. Experimenters are particularly talented. Crawling Example 2: Experimenter carrying baby, mom at end of walkway, gridded high-density foam surface. Example of how to run crawling gait when only one experimenter is available. Crawling Example 3: Experimenter carrying baby, mom and experimenter at end of walkway, gridded high-density foam surface, infant wearing head-mounted eye tracker. Locomotor histories correspond to pdf's by Subject #. Note how experimenter clearly defines the criteria over and over. She zeroes in on the correct age through a "negotiation" with the parent. If parent gives an age, experimenter returns with a date. If parent offers a date, experimenter returns with an age. Then experimenter tries to get parent to remember specific event when baby was walking/cruising/crawling (a holiday, birthday, special outing). Blank form for entering parent's report about the baby's locomotion. Date fields on the right provide a "cheat sheet" so that the experimenter can quickly translate dates into ages and ages into dates. Excerpt of testing sitting proficiency: experimenter tests number of seconds the baby is able to maintain upright posture with hands up in the air while doing a long sit and a short sit. Experimenter also tests sitting balance using the Segmental Assessment of Trunk Control (SATCo).