Data collection
guilt, anxiety, depressive symptoms
Quantitative data generated by self-reported questionnaires was collected at pretest
(i.e. baseline), posttest (i.e. 8 weeks after pretest questionnaire completion), and
1-month follow-up (F/U; i.e. 4 weeks after posttest questionnaire completion) for both
groups.The DASS-21 is a 21-item questionnaire assessing depressive symptoms, anxiety, and stress
over the past 7 days on a scale of 0–3 (The Short version of the Zarit Burden Interview (ZBI) is a 12-item self-report
questionnaire assessing caregivers’ perceived burden on a scale of 0–4 (The Marwit–Meuser Caregiver Grief Inventory—Brief-Form (MM-CGI-BF) is a six-item
self-report questionnaire assessing grief in caregivers of PLWD (i.e. losses, including
anticipation of future losses) on a scale of 1–5 (The Caregiver Guilt Questionnaire (CGQ) is a 22-item self-report questionnaire assessing
feelings of guilt in caregivers on a scale of 0–4 (The World Health Organization Quality of Life-BREF (WHOQOL-BREF)—Psychological quality of
life (QoL) component (The Acceptance and Action Questionnaire-II (AAQ-II) is a 7-item self-report questionnaire
measuring psychological flexibility on a scale of 1–7 (The Cognitive Fusion Questionnaire (CFQ)-7 is a seven-item self-report questionnaire
measuring cognitive fusion on a scale of 1–7 (The Engagement in Meaningful Activities Survey (EMAS) is a 12-item self-report
questionnaire assessing a person’s subjective experience of the meaningfulness of everyday
activities on a scale of 1–4 (The Self-Compassion Scale-Short Form (SCS-SF) has 12 items assessing the relationship of
self-compassion to positive psychological health on a scale of 1–5 (