The first of the two discussions presented here, "Sleep Problems, Overtiredness and Overanxiety," describes sleeping behavior of children from birth to 3 years of age and considers situations that affect children's sleep. Topics briefly addressed include the physiology of sleep; developmental aspects of sleep patterns; the effect of lack of sleep; causes of sleep disturbance; mothering difficulties and sleep disturbances; sleep problems from birth to 6 weeks of age; the ritualism surrounding learning to go to sleep; sleep problems between 1 and 4 months of age, between 4 months and 1 year, and between 1 and 3 years; and parental overanxiety and sleep problems. The second discussion, "Frustrating Children: From Birth to Preschool," describes "problem" infants--for example, the excessive crier, the poor sleeper, the difficult feeder, and the "out-of-joint" baby (the baby who does not fit into the family system). Also discussed are frustrations associated with looking after toddlers and frustrations induced by the preschool child. Discussion of toddlers focuses on poor sleep patterns and parental overanxiety, food refusal, misbehavior, and training problems. Discussion of preschool children deals with tantrums and other misbehavior problems, stubbornness, "selective deafness," refusal to be hurried, toilet training problems, and clinging behavior. (RH)