“…While studies of programmes in this category made up the majority of the articles included in this review, it appears that parent education programmes show mixed promise in their effectiveness for reducing the incidence of AHT at this time; albeit some of these programmes did change parent behaviour related to the infant's crying. The studies included in this review that fall under this category can be easily subdivided again into three groups: (i) studies referring to various aspects of a programme called Period of PURPLE Crying® (PPC) (Barr et al ., 2009a, 2009b, 2015, 2018; Fujiwara et al ., 2012; Fujiwara, 2015; Mirabal Rodríguez et al ., 2011; Ornstein et al ., 2016; Stolz et al ., 2017; Zolotor et al ., 2015); (ii) studies referring to programmes of parent newborn education in hospitals after the birth of a child, exemplified by Dias (Altman et al ., 2011; Bravo, 2014; Dias et al ., 2005, 2017; Duzinski et al ., 2018; Keenan & Leventhal, 2010; Kelly et al ., 2016; Palusci et al ., 2006; Trossman, 2016); and (iii) studies about other parent education programmes as a method to prevent AHT (Bechtel et al ., 2011; Coster, 2017; Deyo et al ., 2008; Eismann et al ., 2019; Lopes et al ., 2018; Morrill et al ., 2015; Rabbitt et al ., 2018; Russell et al ., 2008; Russell, 2010; Simonnet et al ., 2014; Taşar et al ., 2015).…”