61.   Others seemed to have behavioral problems or learning disorders.

62.   Research has also shown that bad smells in or near a school tend to evoke behavioral problems.

63.   Research has shown that low levels of lead poisoning cause lower IQs, shortened attention spans, hyperactivity, aggressive behavior, reading disabilities and behavioral problems.

64.   Researchers at the University of Rochester found that some students who are held back a year before starting school show increased behavioral problems later, particularly during adolescence.

65.   Research has shown that even low-level lead poisoning can cause shortened attention spans, hyperactivity, aggression and behavioral problems in children.

66.   Rubin said he did not accept people with severe behavioral problems, and said that when the state pointed out errors in supervision, he corrected them.

67.   Rather than marijuana use causing these behavioral problems, as many parents suspect, the antisocial conduct comes first, Crowley said.

68.   Scientists have found that even mild lead poisoning can result in lower IQs, reading disabilities and behavioral problems.

69.   Sent to Oakland, Calif., he became staff psychiatrist at the United States Naval Hospital, where he treated Vietnam veterans for drug, alcohol and behavioral problems.

70.   She says parental alcoholism also can cause behavioral problems in children, drug abuse by teen-agers and anxiety disorders.