This week’s Retro Report video on “crack babies” (infants born to addicted mothers) lays out how limited scientific studies in the 1980s led to predictions that a generation of children would be damaged for life. Those predictions turned out to be wrong. This supposed epidemic — one television reporter talks of a 500 percent increase in damaged babies — was kicked off by a study of just 23 infants that the lead researcher now says was blown out of proportion. And the shocking symptoms — like tremors and low birth weight — are not particular to cocaine-exposed babies, pediatric researchers say; they can be seen in many premature newborns.

The worrisome extrapolations made by researchers — including the one who first published disturbing findings about prenatal cocaine use — were only part of the problem. Major newspapers and magazines, including Rolling Stone, Newsweek, The Washington Post and The New York Times, ran articles and columns that went beyond the research. Network TV stars of that era, including Tom Brokaw, Peter Jennings and Dan Rather, also bear responsibility for broadcasting uncritical reports.

A much more serious problem, it turns out, is infants who are born with fetal alcohol syndrome.

Retro Report tells the story of the epidemic that wasn’t through firsthand accounts by some of those at the center of things: the researcher who put out the alarm, a pediatric expert who originally cast doubt on his findings and one of the original cocaine-exposed research subjects, a young woman whose life helped disprove the myth of what these infants would become.

The report is the third in a weekly series that will re-examine the leading stories of decades past. Videos are typically 10 to 12 minutes long and are part of a collaboration between The Times and Retro Report, a documentary news organization formed last year.