the effect of humor on secretory immunoglobulin a levels in school-aged children

although research on adult subjects has demonstrated a positive correlation between humor and increased concentrations of secretory immunoglobulin a, the literature has not addressed whether humor might have a similar effect on children. fifth grade student volunteers (n= 190) at elementary schools in hamadan were randomly assigned to treatment and control groups. the study compared secretory immunoglobulin a levels collected before and after the treatment group subjects (n=105) participated in a humorous program and the control group sub¬jects (n-85) participated in an educational non-humorous presentation. concen¬trations of immunoglobulin a were increased in those who observed a humorous presentation.