Visual continuum in non-human animals: Serial dependence revealed in dogs

The study explores if serial dependence occurs in other species besides humans. Eight dogs were trained on quantity discrimination task before being exposed to presentations in which one of the two discriminanda was preceded by a task-irrelevant stimulus. If dogs are susceptible to serial dependence, the task-irrelevant stimulus was hypothesized to influence the perception of the subsequently presented quantity. The results revealed that dogs perceived the currently presented quantity to be closer to the one presented briefly before, in accordance with serial dependence. Moreover, the attention towards the inducer stimulus was analysed. 

The codes are given as R markdown: Codes.html

The following data files are presented:
* Subjects.csv Ð dogsÕ demographic data and number of sessions done both for training and test phase
* Parametric_curve_results.csv Ð The Point of Subjective Equality (PSE) calculated for each dog in each condition.
* Data1.csv Ð The data regarding the dogsÕ choices and attention towards the inducer in test presentations where dogs were presented with discriminations of 4 vs 8 and 6 vs 8. 
* Data2.csv Ð The data regarding the dogsÕ choices and attention towards the inducer in test presentations where dogs were presented with discrimination of 8 vs 8. 
* Data3-csv Ð The data regarding the dogsÕ choices and attention towards the inducer in test presentations where dogs were presented with discriminations of 8 vs 11 and 8 vs 16.