Mission or Ambition? Rethinking Who We Recruit to Mentor Young Workers

Last registered on August 02, 2025

Pre-Trial

Trial Information

General Information

Title
Mission or Ambition? Rethinking Who We Recruit to Mentor Young Workers
RCT ID
AEARCTR-0016297
Initial registration date
July 28, 2025

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
August 01, 2025, 10:06 AM EDT

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

Last updated
August 02, 2025, 8:38 AM EDT

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

Locations

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

Primary Investigator

Affiliation
Harvard Business School

Other Primary Investigator(s)

Additional Trial Information

Status
On going
Start date
2025-05-20
End date
2028-04-30
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Mentors play a critical role in shaping career trajectories. Yet, little is known about who makes an effective mentor and how best to recruit them. In partnership with Mentor Together, we analyze data from a two-stage rollout of mentor recruitment and matching to examine how mentor motivation influences who signs up to mentor, how they engage during the program, and what impact they have on mentees. In the first step, recruitment ads with varied motivational emphasis—either on self-oriented goals like leadership development or on other-oriented motives like altruism and giving back—were used as part of outreach efforts. In the second step, mentees were matched to mentors as part of the organization’s standard matching process within a six-month mentorship program. We track mentors and mentees using survey data and rich digital platform metadata, allowing us to analyze differences across selection into mentoring, engagement and interaction styles, and mentee outcomes, including satisfaction, learning, and labor market transitions.
External Link(s)

Registration Citation

Citation
Alfonsi, Livia. 2025. "Mission or Ambition? Rethinking Who We Recruit to Mentor Young Workers." AEA RCT Registry. August 02. https://doi.org/10.1257/rct.16297-1.1
Sponsors & Partners

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information
Experimental Details

Interventions

Intervention(s)
Intervention 1: Motivational Framing via LinkedIn Recruitment Ads
The first intervention targets the mentor recruitment stage. As part of Mentor Together’s recruitment process messages were varied – one highlighting the social impact of mentoring and the other emphasizing professional growth, resulting in variation in motivational framing. One set of ads highlights the social impact of mentoring to attract intrinsically motivated or other-oriented individuals. To track which message led to a given mentor’s enrollment, each ad is linked to a unique landing page, which allows respondents to be assigned to groups based on their click-through source. While the framing of the ads varies, the program content, structure, and requirements remain identical. This allows us to cleanly compare how mentors with different initial motivations engage with the program—across metrics like participation rates, session quality, content focus, and dropout, without altering the organisation’s modus operandi.


Intervention 2: Six-Month Mentorship Program
In the second stage, mentees are matched to mentors from either the intrinsic framed or extrinsic framed recruitment pool via Mentor Together’s standard matching process. Within each pool, Mentor Together’s matching algorithm assigns mentees to mentors based on availability and shared observable characteristics, ensuring comparability across arms. Critically, because the entire program is delivered via Mentor Together’s digital platform, we can leverage rich administrative metadata—that automatically gets collected through the app—on every aspect of onboarding, training, session participation, quiz completion, module selection, and mentor–mentee interactions. The program aims to improve labor market readiness, confidence, and job search outcomes among young women navigating the transition from college to work. By randomly assigning mentees to mentors from different motivational arms, we assess how mentor motivation influences engagement, mentoring style, and mentee outcomes.
Intervention Start Date
2025-06-20
Intervention End Date
2026-03-30

Primary Outcomes

Primary Outcomes (end points)
1. Mentee satisfaction
2. Mentee learning and work readiness
3. Mentee labor market outcomes
Primary Outcomes (explanation)
1. Mentee satisfaction - measured at midline and endline 1.
- Self-reported satisfaction with the mentor and overall support quality (1. Psychosocial support scale 2. Emotional support scale 3. Career support scale 4. Autonomy support scale -5. Networking support scale)

2. Mentee learning and work readiness – measured at endline 1.
- Module comprehension (overall quiz score)
- Expectations (time to employment; perceived competitiveness; wage expectations—own and peers’)
- Labor market readiness (updated CV; planned use of network connections; forward-looking behaviors related to career planning)

3. Mentee labor market outcomes – measured at endline 1 and endline 2.
- Job search behavior (intensity, breadth, and efficacy, following Alfonsi et al. 2025)
- Employment outcomes (employment status, days worked, earnings, sector match)

Secondary Outcomes

Secondary Outcomes (end points)
3. Mentor Take-up – proportion of leads who complete the full recruitment process (onboarding, training, verification) after engaging with an advertisement, complete the recruitment process. We will be able to track (source: MT Administrative Data):
- Sign-up rate
- Screening survey completion rate
- Verification completion rate
- Number of self-learning sessions completed
4. Matching Process – pickiness in matching and preference over mentees
- Number of mentees rejected
- Characteristics of mentees rejected
- Time taken to match
5. Program Engagement – this is the level of sustained participation exhibited by mentors after they have been matched with a mentee and the program has started. Unlike take-up, which captures pre-program recruitment behavior, engagement reflects in-program commitment and effort. We will be able to track (Sources: MT Administrative Data; Endline 1 Survey):
- Number of completed sessions
- Average session duration
- Mentor/mentee speaking ratio
- Sentiment analysis
- Number of interaction outside of structured sessions
6. Mentorship Content – We will be able to track through session recordings, administrative data on module choices and curriculum knowledge:
- Sessions content (calls transcript)
- Sessions content (type of support)
- Mentor module-comprehension overall Quiz score
- Choice of modules, among the available ones
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
1. Recruitment Intervention: Randomizes exposure to two types of LinkedIn advertisements. One set emphasizes the social impact of mentorship and the opportunity to support underrepresented students (“other-oriented” benefits); the other highlights personal professional returns, such as signaling, skill development, and career advancement (“self-oriented” benefits).

2. Program Intervention: To evaluate whether mentors recruited under different framings vary in their program performance we randomly assign mentees to one of the two mentor pools and subsequently match them to mentors in the pool using the platform’s standard compatibility algorithm. Once matched, mentors and mentees complete a 6-months mentorship program aimed at supporting mentees in their college-to-labor-market transition.
Experimental Design Details
Not available
Randomization Method
Done in office by a computer.
Mentees are randomly assigned to one of two pools. Randomization is stratified at the college level.
Randomization Unit
Individual (mentee)
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
0
Sample size: planned number of observations
1200 mentees 600 mentors
Sample size (or number of clusters) by treatment arms
0
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
Harvard University
IRB Approval Date
2024-10-12
IRB Approval Number
IRB24-1389
Analysis Plan

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information