During his stay he gave two lectures concerning the coherence of different language levels and their assertive conditions for preschool children, as well as the conceptual design of the NUBBEK-study in due consideration of the recording of pedagogical qualities in different educational or care situations within a family or institution for young children. („Zum Zusammenhang verschiedener Sprachstandsmaße und ihrer antezedenten Bedingungen bei Kindern im Vorschulalter“, „Konzeption der NUBBEK-Studie unter besonderer Berücksichtigung der Erfassung pädagogischer Qualität in familialen und außerfamilialen Betreuungs-/Bildungssettings von jungen Kindern.“). Due to numerous parallels between the NUBBEK Study and the concepts of the Infant Cohort of NEPS, the lectures entered into an open and lively information exchange.