Multi-Dimensional Skill Portfolio Signaling
A single composite score or overall grade causes lower-performing candidates to fear certification because it labels them as generally low-ability, discouraging disadvantaged youth from participating in signaling.
Picture this
Imagine a multi-tool pocket knife with a blade, scissors, and a file—even if the main knife blade is dull, the scissors or file might be razor-sharp. Testing job-seekers across multiple distinct skill types ensures that almost every applicant discovers at least one specialized strength to show employers.
What the evidence says
44% of participants scored in the top performance band for at least one skill, while only 10% scored in the lower half across all skills; as a result, earnings for the certified group strictly stochastically dominated control earnings.
- Who
- N = 469 tested workshop participants (youth job-seekers) in Addis Ababa, Ethiopia.
- How
- Multi-dimensional test battery (Raven cognitive matrices, math, language, and 3 work samples) evaluated against endline earnings distribution via stochastic dominance tests.
What to do
Disaggregate applicant evaluations into independent skill category certificates (e.g., cognitive reasoning, linguistic accuracy, data entry speed) rather than releasing a single aggregate GPA or score.
From the source
"Indeed, 44% of workers score in the top band for at least one skill and only 10% of workers are in the lower half of the distribution for all skills. Further, we find that earnings in the treatment group strictly stochastically dominate earnings in the control."
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