Joanne Frattaroli
Joanne Frattaroli is a psychologist at the University of California, Irvine, who publishes as Joanne Frattaroli Zinger. Her 2006 review pooled 146 randomised controlled studies of expressive writing and experimental disclosure, and it is the reason this publication holds the effect as real and small. It is also the reason James Pennebaker's effect is now reported at roughly a third of the size an earlier review gave it.
Who they are
A meta-analysis pools many separate studies into a single estimate. The more studies it can include, and the more carefully it handles the ones that never got published, the closer that estimate should be to the truth. Frattaroli's is the largest and most careful one this literature has.
The shape of the evidence is the point. Joshua Smyth's earlier and smaller synthesis put the effect roughly three times higher than hers. The larger and more rigorous the review got, the smaller the number became. That is the same downward curve that ended with ego depletion in serious trouble, with one important difference: here the effect survives the shrinking. It does not disappear. It just turns out to be modest.
Key papers
Frattaroli, J. (2006). "Experimental disclosure and its moderators: A meta-analysis", Psychological Bulletin, 132(6), 823 to 865. Sole author. 146 randomised controlled studies. The pooled correlation is about 0.075. A conversion of that figure into a standardised effect size circulates in secondary summaries and has not been checked against the primary text, so it is not printed here.
Key ideas
Real and small is a perfectly respectable finding, and it is the one this literature actually supports. It is not the finding the popular version reports.
In plain terms: most individual people who try expressive writing will not notice much. Across many hundreds of people there is a genuine average benefit.
Her review also takes publication bias seriously, meaning the tendency for studies that found something to get printed while studies that found nothing sit in a drawer. That is a large part of why her estimate is lower than the earlier one.
When two reviews of the same literature disagree, the tiebreaker is usually size and method rather than recency. Hers wins on both.
Concepts on this site
Find them elsewhere
Nothing confirmed. A search was run and no website or account could be tied to this person with enough certainty to publish. A name match on its own is not evidence, and a wrong link here would be worse than none.
Checked 2026-09-11. Handles and affiliations go out of date, so treat this block as a snapshot rather than a standing fact.
Sources
- Frattaroli, J. (2006). Psychological Bulletin, 132(6), 823 to 865.
- Affiliation confirmed 2026-09-11 against UC Irvine records.