“…In laboratory experimentation it has been found that ignoring a cry leads to decreased crying (Etzel & Gewirtz, 1967), while at home, over a longer period of time, ignoring a cry is associated with more frequent crying . Such inconsistencies can lead to acrimonious argument (Ainsworth & Bell, 1977;Gewirtz & Boyd, 1977a, 1977c or sterile cross-paradigmatic controversy (Kuhn, 1962). Such inconsistencies can lead to acrimonious argument (Ainsworth & Bell, 1977;Gewirtz & Boyd, 1977a, 1977c or sterile cross-paradigmatic controversy (Kuhn, 1962).…”