Parents with a low level of education more frequently have children with language problems. However, parents with a middle and high level of education are more often concerned about the language development of their child. As a consequence, the overestimation of language problems is a real issue in clinical practice. Normal variations in language development often are not considered. The analysis of compiled background variables indicates that language problems are genetically influenced (gender and family aggregation). Language input also is of importance (interactions with a language-competent parent or caregiver and peers): children with language problems less often attended daycare.