in
one of the boxes and was
then released by way of
the exit door and rewarded
when the right one was
chosen

" 23 (2nd series). No punishment .............. Reward for each trial

" 24 (1st series). Return to starting point. .. Food only for correct first
choices

" 24 (2nd series). No punishment .............. Reward for each trial

" 25-30 ........... Same as on 24th ............

July 1 (1st series). No punishment .............. " " " "

" 1 (2nd series). Return to starting point ... Reward only for correct first
choices
" 2-8 ............. Same as on July 1 ..........

" 8 (2nd series). No punishment .............. Reward for each trial

" 8 (3rd series). Return to starting point ... Reward only for correct first
choices

" 9-10 ............ Same as for July 8 (3rd series)

" 10 (2nd series). Momentary confinement in ..... Reward for each correct choice
wrong boxes

" 12 .............. Return to starting point ..... Reward for correct first choice

" 12 (2nd series). 30 sec. confinement .......... Reward for each correct choice

" 12 (3rd series). 5 " " ............... " " " " "

" 13 .............. 30 " " ............... " " " " "

" 14-17 ........... Return to starting point ..... Reward for correct first choices

" 17 (2nd series). 60 sec. confinement .......... Reward for each correct choice

" 19 .............. 30 " " ............... " " " " "

" 20-26 ........... 10 " " ............... " " " " "

" 27-30 ........... Right box indicated by slight Reward in each right box
raising of exit door
momentarily.
No punishment

" 30 (2nd series). Return to starting point ..... Reward for correct first choices

" 31 .............. " " " " ..... " " " " "

" 31 (2nd series)
to Aug. 10 .... 10 to 60 sec. confinement .... Reward for each correct choice

Aug. 10 (2nd series). Thre