Efficacy of free association task for sleep-onset insomnia

Efficacy of free association task for sleep-onset insomnia - Efficacy of free association task for sleep-onset insomnia

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000041947

Enrollment

Registered

2020-09-30

Start date

2019-10-15

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sleep-onset insomnia

Interventions

Free association task (Psychological intervention: Participants observe their worry) Do it twice daily for 2 weeks

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Japanese university students -Sleep onset latency is over 30 minutes 2 days or more per week -Those who can understand and consent the scope and contents in the trial

Exclusion criteria

Exclusion criteria: -Those who have been diagnosed with physical and mental illness or sleep disorders -Those who go to psychiatry or psychosomatic medicine -Those receiving psychological counseling -Those taking sleeping pills

Design outcomes

Primary

Measure	Time frame
Pittsburgh Sleep Quality Index One week and two weeks after the start of the free association task	—

Secondary

Measure	Time frame
Sleep diary (Bed time, Rise time, Sleep latency)	—

Countries

Japan

Contacts

Public ContactShintaro Hara

Waseda University Advanced Research Center for Human Sciences

hara@akane.waseda.jp080-3026-8126

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026