Coding and Reliability
The videotapes from the home and school administrations were later coded
by trained research staff. BOSCC coding uses decision trees to score 15
items related to child SC behaviors (8 items), RRB (4 items), and OAB (3
items). Items are rated on a scale of 0-5, where lower scores indicate
better child performance. The two 5-minute coding segments are divided
to each include 4 minutes of play and 1 minute of bubbles. Trained
raters with established reliability (within 1-point for at least 80% of
the items on each segment and Total Change score within 4 points on 3
consecutive practice videos) coded the videos. Forty-nine videos (i.e.,
26 at T1 and 23 at T2) were coded. Both raters independently coded every
fifth video (28.6%) to monitor ongoing reliability. If not reliable on
a segment, raters would independently re-code and re-check reliability
(occurred on 5 videos). Once reliable, they met to discuss disagreements
to decrease potential drift in future coding.