Table 3.

Main Hypotheses and Variables.

Hypothesis	Predictor variables	Outcome variable
1. 'Technological Competence' and 'Professional Experience' will be negatively associated with 'Concern with direct TMH interventions in ASD'.	'Technological competence' (Likert scale: 0 = novice; 10 = expert), ordinal and self-rated	'Concern with direct TMH interventions in ASD' is a composite score. It has been computed by summing the self-reported ratings on the 5-point Likert scale (0 = not at all concerned; 5 extremely concerned) by each intervention aspect the participant indicates is a potential challenge. The total concern score can range from 0 (i.e. no concern) to 140 (i.e. very concerned about all possible challenges).
	Professional experience, self-estimated number of autistic service users the participant reported having offered mental health interventions to in their career(s) (5 levels: 1; 2–10; 11–20; 21–49; Over 50).
2. Levels of 'Technological Competence' and 'Professional Experience' will be negatively associated with the 'Number of Experienced Barriers'	As above	'Number of experienced barriers' consists of challenges that participants (who have been delivering interventions remotely) indicate they have experienced (using a tick-box approach), summed with the number of intervention aspects (e.g. patient rapport) rated as ‘worse’ or ‘much worse’ due to remote delivery.