Symptoms are the outward manifestations that allow children to identif
y and recognize illness; children's understanding of the symptoms of a
n illness may be directly related to their understanding of its cause
or means of transmission. This study is the first empirical investigat
ion of children's conceptual understanding and factual knowledge of th
e symptoms of AIDS. Children (N = 361; grades K to 6; 57% black, 24% H
ispanic, 19% white; 52% female) attending four public schools in New H
aven, Connecticut, were interviewed using a standardized semistructure
d interview (ASK, AIDS Survey for Kids) that included open-ended quest
ions about the symptoms of AIDS and, for comparison, cancer and colds.
Responses were scored for level of conceptual understanding and coded
for factual content. For each illness, grade level was the variable m
ost strongly correlated with symptomatology concept score (R = .42-.48
, p < .0001) and contributed significantly (p < .0001) to the variance
observed in concept score even after controlling for race, gender, ve
rbal fluency, and socioeconomic status. The mean concept score was low
er (p < .01) for symptomatology of AIDS (2.8 of possible 5) than for c
ancer (3.1) or colds (3.9). In addition, far more symptoms were named
for colds than for either cancer or AIDS. Children who believed that H
IV is spread via each of five potential means of transmission by casua
l contact were more likely (p < .01) to cite cold symptoms as symptoms
of AIDS. We conclude that there exists a developmental progression in
children's understanding of the symptomatology of AIDS. Children have
a less sophisticated conceptual understanding and narrower factual kn
owledge base for AIDS than for colds and therefore have the capability
to increase their understanding and knowledge about AIDS. Furthermore
, improving children's understanding of the symptoms of AIDS may dimin
ish misconceptions about transmission of HIV via casual contact.