See giveifyouwin.org
Conditional pledges (‘Give if you Win’), esp.
Work with EA orgs at universities and in companies; possibly working with 80k hours &/or FoundersPledge, give opportunity for career guidance
Control: Ask about career goal/target, follow up in 1 year, ask for pledge then
Treatment: Same but ask initially for conditional pledge (‘if you attain the goal’)
See Give If You Win project (hope to scale up evidence from smaller contexts)