Evaluating the feasibility and exploring the efficacy of an emotion-based approach-avoidance modification training (eAAMT) in the context of perceived stress in an adult sample — protocol of a parallel randomized controlled pilot study

Table 1 Overview of measures per timepoint

Variable	Instrument	Timepoint^a
		T0	T1					T2			T3
			Pre	Tr1	Post	Tr2	Tr3	Pre	Tr4	Post
Demographics	Self-devel	x
Current and past psychotherapy	Self-devel	x
Feasibility outcomes^b
Intervention usability	Self-devel									x
App usability	SUS									x
Acceptability	Self-devel									x
Clinical outcomes
Psychometric measures
Perceived stress	PSS-10	x	x							x	x
Current stress level	Self-devel		x			x^b	x^b	x		x	x
Dysfunctional beliefs	DAS-A/H		x							x	x
Emotional state	Self-devel		x							x	x
Emotion regulation skills	ERSQ		x							x	x
Depressive symptoms	CES-D		x							x	x
Performance measures^b
Reaction time				x		x	x		x
N of failed trials				x		x	x		x
Felt intensity of emotion	Self-devel			x		x	x		x
Rating of emotion display	Self-devel			x		x	x		x
Physiological measures^b
Cortisol (saliva)	Saliva samples		x					x
α-Amylase (saliva)	Saliva samples		x					x
Heart activity	Radar measurement		x		x			x		x
Respiration	Radar measurement		x		x			x		x

Note: Tr Training, self-devel Self-developed questionnaire/item, PSS-10 Perceived Stress Scale 10, DAS-A Dysfunctional Attitude Scale-Agreement, DAS-H Dysfunctional Attitude Scale-Helpfulness, ERSQ Emotion Regulation Skills Questionnaire, CES-D Center for Epidemiological Studies Depression Scale, SUS System Usability Scale. ^aT0, screening; T1, assessment on the first day of training; T2, assessment on the last day of training; T3, assessment 1 week after training completion. At T1 and T2, measures will be taken before (pre) and after (post) the training. Tr1–4 are measures taken during the training after each trial. ^bMeasures are not taken in the inactive control group

ISSN: 2055-5784