Pigeons have a long and legendary history of learning conditional reinforcement and learning entirely (logue 2002). Many properties of pigeons make them suitable for controlled analysis of near miss effects: have excellent visual acuity, an easily adjustable level of motivation and give high parameters of temporary discounting compared to other ordinary laboratory animals (Stevens and Stevens Stevens 2009), https://vimeo.com/user212338191, which relevant to the research of online games, since problematic players receive it has been found that players even more devalue deferred rewards than such, who does not play in gambling games (dixon et al.