“…Citizens have helped professional scientists gather data on animal and plant populations (Cohn, 2008;Gardiner et al, 2012;Donnelly et al, 2014), canine behavior (Hecht and Spicer Rice, 2015), celestial objects (The Planetary Society, 2014;Citizen Science Alliance, 2014), environmental pollutants (Conrad and Hilchey, 2011), fisheries (Fairclough et al, 2014), whale sounds (Citizen Science Alliance, 2014), meteorology (Citizen Science Alliance, 2014), and invasive species (Starr et al, 2014, Gallo andWaitt, 2011). Laypeople have played a pivotal role in study design, subject recruitment, and data interpretation in community-based research in public, environmental, and mental health (O'Fallon and Dearry, 2002;Savage et al, 2006;Horowitz et al, 2009).…”