What researchers studied

Study combining panel surveys, administrative records, digital activity logs, and a randomized information intervention with more than 2,000 undergraduates; treated students received either general feedback or personalized feedback benchmarking their study habits. More than 2,000 undergraduate students participating in the study-habit measurement and randomized feedback intervention

What they found

  • Many students devoted substantial time to passive strategies such as rereading even though active retrieval was more effective, and those choices predicted lower performance and larger self-assessment errors.
  • General feedback had little effect on study behavior.
  • Personalized feedback widened students' perceived effectiveness gap between active and passive study methods by 42 percent and shifted time toward more effective practices.
  • Personalized feedback raised subsequent exam scores by approximately 0.05 to 0.08 standard deviations.

What the study does not prove

  • This is a July 2026 NBER working paper and should not be described as a peer-reviewed journal article unless a later published version is independently verified.
  • The participants were undergraduates, so the findings should not automatically be generalized to younger K-12 students.
  • The personalized intervention included individualized benchmarking and information about study habits; the effect should not be attributed to one isolated technique such as retrieval practice alone.
  • The reported 0.05 to 0.08 standard-deviation effect is not equivalent to a 5 to 8 percentage-point score increase and should not be marketed that way.

Evidence strength: Strong experimental component within a multi-source undergraduate study; randomized feedback intervention; NBER working paper.

Why this matters for families

A student can spend substantial time studying without using that time efficiently. This randomized intervention suggests that personalized feedback about study habits can change behavior more effectively than generic advice, although the exact results come from undergraduates and should not be treated as a guaranteed Noor outcome.

Noor interpretation

How Noor translates the evidence into practice

The study supports a core Noor Lyra principle: telling every student to study more is weaker than diagnosing how a particular student is using effort and giving feedback tied to that student's actual behavior. Personalization should apply not only to subject instruction but also to how students learn, practice, retrieve, and monitor understanding.

For Noor Lyra Educators and academic coaching, assess how the student currently studies before prescribing more study time. Identify passive habits that create an illusion of fluency, teach stronger retrieval and practice routines when appropriate, and give feedback tied to the student's own behavior and results rather than relying on generic study-skills advice.

Read the original source

Noor links to the original or authoritative source so families can distinguish the evidence itself from our interpretation.

Open original source →

DOI: 10.3386/w35436

Research notes

study skillsretrieval practicepersonalized learningacademic coachinglearning sciencestudent outcomeshigher education

No single study determines a student's plan. Noor uses research as one input alongside the learner's goals, observed performance, academic context, and response to instruction.