Warrington, Elizabeth: experimental materials 29 items of experimental materials used from 1960s-2000s, including stimuli for finger blocks test (wooden blocks in tin), picture of patterns on white card, famous faces B&W photos in brown card ring bound book, paired white cards with dot patterns; dots, flowers, liquid patterns on white card; letters, symbols and digits (box of 5 sets of cards); B&W photos of famous faces; box of glass slides; pictures of objects on white cards; B&W photos of unusual views of objects; pictures of animals, birds and other objects (one box of drawings on brown card); photos of objects (4 packs of B&W photos on white card - usual and unusual views) drawings of objects and animals on small white cards; one box of envelopes of coloured images in different categories; B&W photos of objects on white card; B&W photos of three faces (one famous) on card bound with string; 3 packs of B&W drawings on card; A4 sheet of B&W drawings of objects base mirror and invert; B&W drawings (4 sets); holmgrens wool test for colour blindness; anoxia stimuli (envelope of negatives) 1960s-2000s