elochoice               Elo-ratings for pairwise comparisons of visual
                        stimuli
makepairwise            transform preference data
physical                Physical strength of males
randompairs             generate random data of pairwise preference
                        ratings
raterprog               reliability with progressive rater inclusion
ratings                 indiviual stimulus ratings
reliability             calculate reliability-index
singlechoice            update stimulus ratings after one rating event
summary.elochoice       summarize elochoice object
triplets                calculate ratings from sequence of rating
                        events, allowing for more than two stimuli
