Effects of Trier Social Stress Test on Affect, Heart Rate and Beliefs: Pre-Analysis Plan

Last registered on March 06, 2017
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Pre-Trial

Trial Information

General Information

Title
Effects of Trier Social Stress Test on Affect, Heart Rate and Beliefs: Pre-Analysis Plan
RCT ID
AEARCTR-0002071
Initial registration date
March 03, 2017

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
March 06, 2017, 9:05 AM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

Country
Kenya
Region
Nairobi

Primary Investigator

Name
Prachi Jain
Affiliation
Loyola Marymount University
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Johannes Haushofer
PI Affiliation
Princeton University
Contact Investigator

Additional Trial Information

Status
Completed
Start date
2016-11-16
End date
2017-03-01
Keywords
Health
Additional Keywords
Stress
JEL code(s)
Secondary IDs
Abstract
This document describes the analysis plan for a randomized laboratory experiment examining the effects of the Trier Social Stress Test (TSST) on psychological and physiological states. Our study expects to include 60 subjects from the informal settlements in Nairobi, Kenya. Respondents are randomly assigned to either a treatment or control condition of the TSST, for either one single day or seven consecutive days. This plan outlines the design of the study, the outcomes of interest, and the econometric approach.
External Link(s)

Registration Citation

Citation
Haushofer, Johannes and Prachi Jain. 2017. "Effects of Trier Social Stress Test on Affect, Heart Rate and Beliefs: Pre-Analysis Plan." AEA RCT Registry. March 06. https://doi.org/10.1257/rct.2071-1.0
Former Citation
Haushofer, Johannes and Prachi Jain. 2017. "Effects of Trier Social Stress Test on Affect, Heart Rate and Beliefs: Pre-Analysis Plan." AEA RCT Registry. March 06. https://www.socialscienceregistry.org/trials/2071/history/14682
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2016-11-16
Intervention End Date
2017-02-22

Primary Outcomes

Primary Outcomes (end points)
Salivary cortisol, responses on PANAS questionnaire, guess of performance, heart rate and heart rate variability
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Treatment:
We use a 2 x 2 design in which participants are randomized into either a stress or a control condition, and into either an acute or a chronic condition. The TSST is designed to induce stress using two socially evaluative situations – a speech task and a mental arithmetic task. The acute condition consists of completing the TSST or a control task on a single day (Day 1); the chronic condition consists of completing the TSST or a control task for 7 consecutive days.

Data Collection:
We conducted laboratory sessions with 4 respondents per session, until we reached 60 respondents. Participants were randomly assigned to one of four conditions – either the control or treatment group, for either one or seven consecutive days.
Experimental Design Details
Randomization Method
Alternating treatments by week, randomized invitations to sessions
Randomization Unit
Experimental session
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
15
Sample size: planned number of observations
60
Sample size (or number of clusters) by treatment arms
15 treated acute, 15 treated chronic, 15 control acute, 15 control chronic
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Princeton Institutional Review Board
IRB Approval Date
2015-10-21
IRB Approval Number
7367
Analysis Plan

Analysis Plan Documents

TsstPAP_2017.03.03.pdf

MD5: d39badab2def546241be270ffb266979

SHA1: 1959672a6b9e274cbde8beeac5929806c4711504

Uploaded At: March 03, 2017

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials