... They may aim to improve reading ability (Kong & Fitch, 2002;Raphael & McMahon, 1994) because discussion aids comprehension (Broughton, 2002;Murphy, Wilkinson, Soter, Hennessey, & Alexander, 2009). They may be therapeutic (Hammer, Egestad, Nielsen, Bjerre, Johansen, Egerod, & Midtgaard, 2017;Lang & Brooks, 2015;Muellenbach, 2018;Rimkeit & Claridge, 2017), for rehabilitation (Hartley & Turvey, 2009;Wiltse, 2011), for understanding religious messages or social issues (Clarke & Nolan, 2014;Gramstrup, 2017), educational (Kan, Harrison, Robinson, Barnes, Chisolm, & Conlan, 2015;Scourfield & Taylor, 2014), a networking aid (Alsop, 2015) or may be social or recreational (Clarke, Hookway, & Burgess, 2017;Long, 2003). The importance of book groups is recognised by some publishers who provide additional resources for book clubs (e.g., www.bloomsbury.com/uk/communities/bookgroups; ...