Table 1.

Questions and studies used to analyze the adaptative value of photography-related behaviors.

Questions	Studies	Answers
What do people photograph?	Crandall et al., 2009; Hu et al., 2014; De Looper, 2016	Family, friends, themselves, pets, activities, celebrations, food, fashion, nature, famous places, and landmarks
In which situations and for what purposes do people take photos?	Bourdieu, 1965; Chalfen, 1987; Kindberg et al., 2005; Barasch et al., 2014	People take photos of significant events for personal and/or social purposes
Does the emotional state of people influence whether and what they photograph?	Chalfen, 1987; Gillet et al., 2016; Diefenbach and Christoforakos, 2017	Photographing is influenced by states in which people experience a pleasant event, which is also related to the processing of uncertainty
How does taking photos influence how the photographers and the photographed individuals experience a situation?	Burgess et al., 2000; Mols et al., 2015; Diehl et al., 2016	Photographing increases the pleasant experience of a situation and the feeling of social connectedness
How does photographing an event affect how well photographers later remember this event?	Henkel, 2014; Barasch et al., 2017; Blitch, 2017; Jain and Mavani, 2017	Photographers tend to remember better visual features of the photographed event later, but less non-visual features
What are the characteristics of photos that people consider successful or “good”?	Kirk et al., 2006; Bakhshi et al., 2015	The photos have enough desirable visual and/or representational characteristics
What do people do with the photos they have taken?	Schiano et al., 2002; Kindberg et al., 2005; Kirk et al., 2006; Broekhuijsen et al., 2017	People keep photos, edit some, share them, use them for social purposes and/or autobiographical remembering
How do people use the photos they have taken on online social networking services, and does seeing photos in social media affect the emotional state of the viewers?	Krämer and Winter, 2008; Hu et al., 2014; Lee et al., 2015; Malik et al., 2016; Pittman and Reich, 2016; RSPH and YHM, 2017	People use photos to evoke attention and engagement, and to share important information. Seeing the photos affects emotional arousal and evaluations
How do people use photos in connection with courtship and mating behaviors?	Piazza and Bering, 2009; Sedgewick et al., 2017; Gale and Lewis, 2020	People create and show photos of themselves in which they are represented in the way they want to be seen by potential sexual or romantic partners
What importance do personal photos have for families?	Csikszentmihalyi and Rochberg-Halton, 1981; Petrelli and Whittaker, 2010; Whittaker et al., 2010; Frohlich et al., 2013	Photos are one of the most precious possessions of families. Photos symbolize the roots, importance, or meaning of a family