Simulating mother–child interaction: exploring two varieties of a non-linear dynamic systems approach<FNR>1</FNR> Order of authorship between the first and second author was determined by the toss of a coin, as both authors contributed equally to the paper. Portions of this paper were presented as a poster at the KNAW colloquium on mother–child interaction that was held in Amsterdam, The Netherlands, from May 30 to June 2, 1995. - Olthof, Tjeert; Kunnen, E. Saskia; Boom, Jan (Infant & Child Development, 2000)