“…The Dutch version of the MacArthur communicative development inventories (N-CDIs; Zink & Lejaegere, 2002) was used for receptive and expressive vocabulary. We used an adapted version (Deckers et al, 2016a) Huizinga & Smidts, 2012), (c) Child behaviour checklist 1.5-5 (CBCL; Achenbach & Rescorla, 2000) for behavioural and emotional problems, attention distractibility and temperament, (d) The Bridge: Emergent literacy skills (Pierce, Summer, & O'DeKirk, 2005) for insight in book reading experiences and phonological/phonemic awareness and (e) Social networks questionnaire (Blackstone & Hunt-Berg, 2003) for the number of communication partners. Furthermore, parents were sent a questionnaire including questions about socioeconomic status (i.e.…”