About this trial
This single-arm feasibility study aims to evaluate the feasibility and acceptability of an ecological momentary intervention (EMI) designed to reduce psychological distress among young adults with high levels of adverse childhood experiences (ACEs). The intervention targets three potentially modifiable transdiagnostic psychological processes: emotional clarity, self-esteem, and catastrophizing. Approximately 20 young adults aged 18-29 years who have experienced at least two types of ACEs and report elevated psychological distress will be enrolled. All participants will receive a 2-week smartphone-based EMI delivered in daily life. Feasibility, acceptability, and safety will be evaluated using recruitment, retention, intervention use, participant satisfaction, perceived burden, and adverse events. Changes in psychological distress and related psychological outcomes from baseline to post-intervention will also be explored as exploratory outcomes.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Aged 18-29 years.
History of relatively high exposure to adverse childhood experiences (ACEs), defined as having experienced at least two types of ACEs.
Presence of psychological distress, defined as a score of 5 or higher on the 6-item Kessler Psychological Distress Scale (K6).
Able to read and understand Chinese fluently.
Disqualifiers
Current or previous diagnosis of a mental disorder by a psychiatrist.
High suicide risk as assessed using the self-report screening version of the Columbia-Suicide Severity Rating Scale (C-SSRS).
Trial design
Single group
Treatments tested in this trial
EMI
BehavioralThe ecological momentary intervention (EMI) is a 2-week smartphone-based intervention delivered in participants' daily lives. At the beginning of the intervention, participants will watch an approximately 10-minute psychoeducational video introducing the psychological principles underlying the intervention and the purposes of the exercises. They will then receive instructions on how to use the EMI program. During the intervention period, participants will receive brief ecological momentary assessments (EMAs) assessing their current emotional state. Based on their reported emotional valence, the program will provide tailored intervention content. When participants report negative or neutral emotional states (emotional valence ≤ 0), they will receive a negative-emotion module. This module includes brief breathing and grounding exercises, identification and labeling of current emotions, identification of potentially catastrophic or negative self-referential thoughts, cognitive reapprais
Treatment groups
Trial outcomes
Primary outcomes
Enrollment Rate Among Eligible Participants
The proportion of eligible individuals who enroll in the study will be calculated as the number of enrolled participants divided by the total number of eligible participants, multiplied by 100.
Proportion of Eligible Participants
The proportion of screened individuals who meet the study eligibility criteria will be calculated as the number of eligible participants divided by the total number of individuals screened, multiplied by 100.
Intervention Engagement
Intervention engagement will be assessed using automatically recorded program-use data, including participants' completion of ecological momentary assessments and intervention exercises during the intervention period. The proportion of delivered intervention opportunities that are completed will be summarized.
Study Retention Rate
Study retention will be assessed as the proportion of enrolled participants who complete the post-intervention assessment.
Secondary outcomes
Psychological Distress
Psychological distress will be assessed using the 6-item Kessler Psychological Distress Scale (K6). Each item is rated on a 5-point frequency scale from 0 to 4. Item scores are summed to produce a total score ranging from 0 to 24, with higher scores indicating greater psychological distress.
Catastrophizing
Catastrophizing will be assessed using the catastrophizing subscale of the 18-item Cognitive Emotion Regulation Questionnaire (CERQ-18). The CERQ-18 consists of nine 2-item subscales. Each item is rated on a 5-point scale from 1 to 5. The two catastrophizing items are summed to produce a subscale score ranging from 2 to 10, with higher scores indicating more frequent use of catastrophizing as a cognitive emotion regulation strategy.
Self-Esteem
Global self-esteem will be assessed using the 10-item Rosenberg Self-Esteem Scale (RSES). Each item is rated on a 4-point scale from 1 to 4, with negatively worded items reverse-scored. Item scores are summed to produce a total score ranging from 10 to 40, with higher scores indicating higher levels of global self-esteem.
Emotional clarity
Emotional clarity will be assessed using the Lack of Emotional Clarity subscale of the 18-item Difficulties in Emotion Regulation Scale-Short Form (DERS-SF). The subscale consists of two items, each rated on a 5-point scale from 1 to 5. Item scores are summed to yield a total score ranging from 2 to 10, with higher scores indicating greater difficulties in emotional clarity.
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