Table 1.

Frequency of Observed Communication Behavior in Thin and Fully Coded Slices

Adolescent Communication Behavior	Full	Four 1-Minute Slices	Six 1-Minute Slices	Four 2-Minute Slices	Six 2-Minute Slices
Change Talk	29.6%	31.4%	31.7%	29.5%†	29.4%
Commitment Language	14.9%	18.6%	14.3%†	18.0%	16.0%
Counter-Change Talk	10.6%	9.7%	10.2%	11.3%	10.4%†
Other	45.0%	40.3%	43.8%	41.3%	44.2%†
N	2698	424	650	800	1200
Counselor Communication Behavior
Structure Session	6.7%	4.5%†	3.7%	3.8%	4.2%
Positive Information	7.1%	8.2%	8.6%	7.6%†	8.3%
Emphasize Autonomy	10.1%	10.5%	8.9%	10.3%	10.1%†
Elicit Feedback	4.1%	3.7%	4.5%	3.8%†	3.5%
Affirmation	9.2%	10.1%	10.2%	9.5%	9.4%†
Reflection of Change Talk	13.2%	13.7%	14.0%	12.9%†	13.7%
Reflection of Commitment Language	6.5%	6.7%	5.9%	7.4%	6.4%†
Reflection of Counter-Change Talk	2.5%	2.7%	2.0%	3.2%	2.4%†
Other Reflections	9.0%	9.1%	9.3%	9.0%†	8.8%
Summary	4.7%	6.5%	6.9%	6.0%	6.0%†
Open-ended Questions to Elicit Change Talk	9.3%	11.3%	9.7%†	10.8%	10.2%
Open-ended Questions to Elicit Commitment Language	4.4%	4.0%	4.7%	4.7%†	4.6%†
Open-ended Questions to Elicit Counter-Change Talk	2.1%	1.1%	2.1%†	2.0%	2.1%†
Other Questions	6.1%	0.6%	1.0%	1.2%	2.1%†
Other Statements	5.1%	4.4%	5.3%	5.1%†	5.4%
N	4361	706	1003	1275	1878
Proportion of Interaction Extracted
M		14%	27%	20%	41%
Min, Max		9%, 26%	17%, 52%	13%, 39%	26%, 77%

^†Denotes the thin slice sample that most accurately represents the communication behavior observed in the fully coded sample