Energies 2018, 11, 29; doi:10.3390/en11010029 www.mdpi.com/journal/energies Energies 2018, 11, 29 2 of 22 Among the newly introduced alternatives, hydrogen was reported to be a promising source of clean energy [5] as it can mitigate the problems of pollution and scant energy supplies ...
Both responded optimistically, but it was difficult to determine whether their responses were a true reflection of affective state or were due to preferences for specific stimuli. Keywords: gorilla; black bear; cognitive bias; ambiguous-cue; learning 1. Introduction The ambiguous-cue paradigm (ACP)...