Estrogen and Cooperation, Competitiveness, and Risk Preferences
NCT ID: NCT03584971
Last Updated: 2020-10-29
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
UNKNOWN
80 participants
OBSERVATIONAL
2018-10-08
2021-12-30
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
The effect on risk preferences is unclear. Theory generally assumes that female risk aversion increases in the fertile days. However, empirical studies find partly positive and partly negative correlations.
Within the scope of this study, estradiol levels which are collected in the clinical treatment of patients in the Clinic for Gynaecological Endocrinology and Reproductive Medicine are to be linked with the behavioural economic measures of cooperation, competitiveness, and risk preferences, which are collected using questionnaires or a computer-based decision task.
The aim of the research project is to quasi-experimentally isolate the effect of estradiol on competitiveness, cooperation and risk preferences of women.
No study known to us has ever been able to realize a comparable quasi-experimental design which is necessary to isolate the causal effect of estradiol on different behavioural measures.
In the experimental group, a sample of approx. 50 women in fertility treatment (In Vitro Fertilization/Intracytoplasmic Sperm Injection (IVF/ICSI), long Gonadotropin releasing Hormone (GnRH) agonist protocol) is surveyed. This allows us to create a quasi-experimental design in which the estradiol level is exogenously manipulated and regularly measured.
A random sample of 30 male students of Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University serves as a control group.
We realize a longitudinal section design with measurement repetitions, which allows inter- and intrapersonal comparisons. A three-stage procedure with two measuring points and a preliminary clarification meeting is planned.
The following measuring instruments are used to record competitiveness, cooperation and risk preference: SOEP Risk Attitude, Social Value Orientation German A, The cooperative and competitive Personality Scale German, Risk aversion, Willingness to compete.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
OTHER
PROSPECTIVE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
female patients
women in fertility treatment according to Long GnRH Agonist Protocol
No interventions assigned to this group
control group
random sample of male students
No interventions assigned to this group
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
1. female
2. patient in fertility treatment according to Long GnRH Agonist Protocol
3. 18 years and older
4. written declaration of consent
5. persons who are contractually capable and mentally able and willing to follow the instructions of the study staff
6. understanding of the German language (written and spoken)
Control group
1. male
2. 18 Years and older
3. written declaration of consent
4. persons who are contractually capable and mentally able and willing to follow the instructions of the study staff
5. understanding of the German language (written and spoken)
Exclusion Criteria
1. Illiterate
2. pregnant and breastfeeding women
3. persons who are accommodated in an institution on official or court order
4. persons in a dependent or employment relationship with the auditor
5. simultaneous participation in another clinical trial
Control group
1. Illiterate
2. persons who are accommodated in an institution on official or court order
3. persons in a dependent or employment relationship with the auditor
4. simultaneous participation in another clinical trial
18 Years
ALL
Yes
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
RWTH Aachen University
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Frederik Graff
Assistant Professor
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Benjamin Rösing, Dr.
Role: PRINCIPAL_INVESTIGATOR
RWTH Aachen
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
RWTH Aachen University Hospital
Aachen, , Germany
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Facility Contacts
Find local site contact details for specific facilities participating in the trial.
References
Explore related publications, articles, or registry entries linked to this study.
Ranehill, E., Zethraeus, N., Blomberg, L., von Schoultz, B., Hirschberg, A. L., Johannesson, M., & Dreber, A. (2017). Hormonal Contraceptives Do Not Impact Economic Preferences: Evidence from a Randomized Trial. Management Science.
Durante, K. M., Griskevicius, V., Hill, S. E., Perilloux, C., & Li, N. P. (2010). Ovulation, female competition, and product choice: Hormonal influences on consumer behavior. Journal of Consumer Research, 37(6), 921-934.
Gangestad SW, Thornhill R. Menstrual cycle variation in women's preferences for the scent of symmetrical men. Proc Biol Sci. 1998 May 22;265(1399):927-33. doi: 10.1098/rspb.1998.0380.
Buser, T. (2012a). Digit ratios, the menstrual cycle and social preferences. Games and Economic Behavior, 76(2), 457-470.
Buser, T. (2012b). The impact of the menstrual cycle and hormonal contraceptives on competitiveness. Journal of Economic Behavior & Organization, 83(1), 1-10.
Wozniak, D., Harbaugh, W. T., & Mayr, U. (2014). The menstrual cycle and performance feedback alter gender differences in competitive choices. Journal of Labor Economics, 32(1), 161-198.
Pearson, M., & Schipper, B. C. (2013). Menstrual cycle and competitive bidding. Games and Economic Behavior, 78, 1-20.
Drichoutis, A. C., & Nayga, R. M. (2015). Do risk and time preferences have biological roots?. Southern Economic Journal, 82(1), 235-256.
Lazzaro SC, Rutledge RB, Burghart DR, Glimcher PW. The Impact of Menstrual Cycle Phase on Economic Choice and Rationality. PLoS One. 2016 Jan 29;11(1):e0144080. doi: 10.1371/journal.pone.0144080. eCollection 2016.
Murphy RO, Ackermann KA. Social value orientation: theoretical and measurement issues in the study of social preferences. Pers Soc Psychol Rev. 2014 Feb;18(1):13-41. doi: 10.1177/1088868313501745. Epub 2013 Sep 23.
Lu S, Au WT, Jiang F, Xie X, Yam P. Cooperativeness and competitiveness as two distinct constructs: validating the Cooperative and Competitive Personality Scale in a social dilemma context. Int J Psychol. 2013;48(6):1135-47. doi: 10.1080/00207594.2012.743666. Epub 2012 Nov 12.
Holt, C. A., & Laury, S. K. (2002). Risk aversion and incentive effects. American economic review, 92(5), 1644-1655.
Niederle, M., & Vesterlund, L. (2007). Do women shy away from competition? Do men compete too much?. The Quarterly Journal of Economics, 1067-1101.
Related Links
Access external resources that provide additional context or updates about the study.
Website of the Deutsches Institut für Wirtschaftsforschung (DIW) Berlin with description and full questionnaires of the German Socio Economic Panel (SOEP)
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
18-053
Identifier Type: -
Identifier Source: org_study_id