Effects of different mechanisms of incubation

Last registered on November 16, 2023


Trial Information

General Information

Effects of different mechanisms of incubation
Initial registration date
July 06, 2021

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
July 07, 2021, 11:03 AM EDT

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

Last updated
November 16, 2023, 8:13 AM EST

Last updated is the most recent time when changes to the trial's registration were published.



Primary Investigator

City College of New York

Other Primary Investigator(s)

Additional Trial Information

Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
We randomize different resources among participants to an acceleration program and follow the ventures bi-weekly during the program. Specifically, we randomize access to knowledge resources (training, mentoring, peer-interactions), and financial resources (eg. grants) in two treatment groups. One group gets access to both knowledge and financial resources, the second group access only knowledge resources and then there is the comparison group that does not access any resources.
External Link(s)

Registration Citation

Hmaddi, Ouafaa. 2023. "Effects of different mechanisms of incubation ." AEA RCT Registry. November 16. https://doi.org/10.1257/rct.5305-1.3
Experimental Details


Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
We plan to trace multiple outcomes including, the number of hypotheses generated, the number of tests on the hypothesis, the degree and method of testing, the development of prototypes, etc.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Persistence with the idea and entrepreneurship
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Potential participants will apply in advance to an acceleration program. The initial application will help us collect demographic data about the entrepreneurs as well as data about the venture characteristics.
Once the application period is closed, all entrepreneurs will be invited to an onboarding session. We will inform participants that the purpose of onboarding is to allow all applicants to participate at the final demo day competition regardless of their selection outcome. We will also announce the date of the competition and the final prizes for the winners. This is a key incentive to reduce attrition from the control group and motivate all entrepreneurs to work on their venture ideas regardless of their resource accumulation.
All participants who complete the onboarding session will be randomly assigned to two different treatments and a control group. Random assignment to treatments and control will be stratified by gender, resource endowment, and industry. We will then announce the participants assigned to the financial and entrepreneurial capital treatment T2 as the ventures selected to participate in the acceleration program “Dare Inc Acceleration”. We will inform the rejected participants that they have been selected for “Dare Inc Training” T1. Finally, the two treatment groups will start at the same time and last for 12 weeks ending with the demo day competition that will gather all treatment and control groups.
Experimental Design Details
Randomization Method
Stratified randomization in the office by a computer. Stratification is based on gender, industry, quality, and previous access to resources.
Randomization Unit
Venture/ firm level (represented by one of the co-founders) - we collect venture data and entrepreneur data
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
198 ventures
Sample size: planned number of observations
198 entrepreneurs
Sample size (or number of clusters) by treatment arms
198 ventures. 40 in treatment 1, 59 in treatment 2, and 99 in the comparison group
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

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Institutional Review Boards (IRBs)

IRB Name
University of Oregon
IRB Approval Date
IRB Approval Number


Post Trial Information

Study Withdrawal

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Is the intervention completed?
Intervention Completion Date
October 17, 2021, 12:00 +00:00
Data Collection Complete
Data Collection Completion Date
December 30, 2022, 12:00 +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
Was attrition correlated with treatment status?
Final Sample Size: Total Number of Observations
Final Sample Size (or Number of Clusters) by Treatment Arms
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials