Table 2.

Intraclass correlation coefficients for the BCT–MoA links rated by all experts

	Social Support (Unspecified)			Instruction on how to Perform the Behaviour
Mechanism of Action	Round 1	Round 3	∆	Round 1	Round 3	∆
Knowledge	0.05	−0.01	−0.06	−0.03	−0.04	−0.01
Skills	0.05	0.07	0.02	0.00	0.02	0.02
Behavioral Regulation	0.07	0.12	0.05	0.09	0.11	0.02
Social Influences	0.00	−0.01	−0.01	−0.01	0.01	0.02
Memory, Attention, Decision Processes	0.01	0.02	0.01	0.04	0.02	−0.02
Social Professional Role / Identity	0.02	0.10	0.08	0.01	0.02	0.01
Beliefs about Capabilities	0.09	0.18	0.09	0.02	0.01	−0.01
Beliefs about Consequences	0.03	0.05	0.02	−0.03	0.01	0.04
Optimism	−0.04	0.01	0.05	−0.02	0.01	0.03
Intention	0.00	0.10	0.10	−0.02	0.08	0.10
Goals	0.04	0.07	0.03	0.07	0.06	−0.01
Reinforcement	0.10	0.13	0.03	0.03	0.04	0.01
Emotion	0.03	0.08	0.05	0.00	0.03	0.03
Environment	0.01	0.01	0.00	0.03	0.00	−0.03
Norms	−0.01	−0.02	−0.01	0.00	0.01	0.01
Subjective Norms	0.00	−0.03	−0.03	−0.02	0.03	0.05
Attitude towards the Behavior	0.01	0.24	0.23	−0.01	0.23	0.24
Motivation	0.03	0.07	0.04	0.00	0.00	0.00
Self-image	−0.03	0.00	0.03	0.04	0.07	0.03
Needs	−0.02	0.09	0.11	−0.03	0.05	0.08
Values	−0.02	0.17	0.19	0.00	0.06	0.06
Feedback Processes	−0.01	0.02	0.03	0.00	0.02	0.02
General Attitudes and Beliefs	0.08	0.26	0.18	0.03	0.10	0.07
Social Learning	0.04	0.21	0.17	0.07	0.05	−0.02
Cueing	0.07	0.06	−0.01	−0.02	0.05	0.07
Perceived Susceptibility/Vulnerability	0.03	0.03	0.00	0.05	0.05	0.00

∆ = Change in the intraclass correlation coefficient from Round 1 to Round 3.

‘Social Support (Unspecified)’ and ‘Instruction on how to Perform the Behaviour’ are the Behaviour Change Techniques (BCTs) rated by all experts for links with the 26 mechanisms of action. Values in the table indicate the intraclass correlation coefficient for each link rated by all experts who had been randomly allocated to one of five groups.