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Name:
UMIN ID:

Recruitment status Preinitiation
Unique ID issued by UMIN UMIN000044704
Receipt No. R000051045
Scientific Title The effect of memory retrieval on decision-making in healthy subjects
Date of disclosure of the study information 2021/06/29
Last modified on 2021/06/29

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Basic information
Public title The effect of memory retrieval on decision-making in healthy subjects
Acronym The effect of memory retrieval on decision-making in healthy subjects
Scientific Title The effect of memory retrieval on decision-making in healthy subjects
Scientific Title:Acronym The effect of memory retrieval on decision-making in healthy subjects
Region
Japan

Condition
Condition Depression
Classification by specialty
Adult
Classification by malignancy Others
Genomic information NO

Objectives
Narrative objectives1 To investigate the effect of positive autobiographical memory retrieval on decision-making in healthy subjects
Basic objectives2 Others
Basic objectives -Others To investigate whether the above effect depends on personal characteristics of the subjects
Trial characteristics_1 Exploratory
Trial characteristics_2 Pragmatic
Developmental phase Not applicable

Assessment
Primary outcomes 1) Decision-making task performance
2) Behavioral parameters estimated using behavioral modeling (such as risk preference)
Key secondary outcomes 1) The change of mood caused by memory retrieval
2) Whether the effect of memory retrieval on decision making depends on mood change
3) Whether the effect of memory retrieval on decision making depends on subjects' personal characteristics
4) Relationships among other personal characteristics

Base
Study type Interventional

Study design
Basic design Cross-over
Randomization Randomized
Randomization unit Individual
Blinding Single blind -investigator(s) and assessor(s) are blinded
Control Placebo
Stratification NO
Dynamic allocation NO
Institution consideration Institution is not considered as adjustment factor.
Blocking YES
Concealment Central registration

Intervention
No. of arms 2
Purpose of intervention Treatment
Type of intervention
Behavior,custom
Interventions/Control_1 Positive autobiographical memory retrieval. Using 20 positive memories selected based on an autobiographical memory questionnaire administered on a separate day beforehand. The cues of the memories are presented to the subjects and they are asked to recall the corresponding memory vividly, after which they assess the valence and emotional intensity of the memory, as well as how they feel after recalling that memory.
Interventions/Control_2 Control intervention: neutral autobiographical memory retrieval. Using 20 neutral memories selected from the above memory questionnaire.
Interventions/Control_3
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10

Eligibility
Age-lower limit
20 years-old <=
Age-upper limit
29 years-old >=
Gender Male and Female
Key inclusion criteria 1) Age is 20 to 29 at the time of obtaining consent.
2) Regardless of gender.
3) A person who, after receiving a sufficient explanation before participating in this research, has a sufficient understanding and provided informed consent.
Key exclusion criteria 1) Those who are currently suffering from a memory impairment or are currently undergoing medical examination (including those who are scheduled to undergo medical examination) in order to confirm if they have memory impairment, by self-declaration.
2) Those who are currently suffering from a mental illness or are currently undergoing medical examination (including those who are scheduled to undergo medical examination), by self-declaration.
3) Those who cannot recall at least 20 positive and 20 negative autobiographical memories in response to the autobiographical memory questionnaire.
4) Those who are judged to be unsuitable as research subjects by the researcher in charge of the experimental sessions (for example, subjects who cannot conduct the decision-making task smoothly due to physical conditions).
Target sample size 34

Research contact person
Name of lead principal investigator
1st name Shin
Middle name
Last name Nakagawa
Organization Yamaguchi University Graduate School of Medicine
Division name Division of Neuropsychiatry, Department of Neuroscience
Zip code 7558505
Address Minamikogushi 1-1-1, Ube, Yamaguchi, Japan
TEL 0836222255
Email brain@yamaguchi-u.ac.jp

Public contact
Name of contact person
1st name Chong
Middle name
Last name Chen
Organization Yamaguchi University Graduate School of Medicine
Division name Division of Neuropsychiatry, Department of Neuroscience
Zip code 7558505
Address Minamikogushi 1-1-1, Ube, Yamaguchi, Japan
TEL 7558505
Homepage URL
Email brain@yamaguchi-u.ac.jp

Sponsor
Institute Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine
Institute
Department

Funding Source
Organization None
Organization
Division
Category of Funding Organization Self funding
Nationality of Funding Organization

Other related organizations
Co-sponsor
Name of secondary funder(s)

IRB Contact (For public release)
Organization Institutional Review Board Committee in Yamaguchi University Hospital
Address Minamikogushi 1-1-1, Ube, Yamaguchi, Japan
Tel 0836222428
Email clin_res@yamaguchi-u.ac.jp

Secondary IDs
Secondary IDs NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW

Institutions
Institutions

Other administrative information
Date of disclosure of the study information
2021 Year 06 Month 29 Day

Related information
URL releasing protocol
Publication of results Unpublished

Result
URL related to results and publications
Number of participants that the trial has enrolled
Results
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description

Progress
Recruitment status Preinitiation
Date of protocol fixation
2021 Year 06 Month 28 Day
Date of IRB
2021 Year 06 Month 29 Day
Anticipated trial start date
2021 Year 07 Month 05 Day
Last follow-up date
2023 Year 03 Month 31 Day
Date of closure to data entry
Date trial data considered complete
Date analysis concluded

Other
Other related information

Management information
Registered date
2021 Year 06 Month 29 Day
Last modified on
2021 Year 06 Month 29 Day


Link to view the page
URL(English) https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000051045

Research Plan
Registered date File name

Research case data specifications
Registered date File name

Research case data
Registered date File name


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