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diff --git a/doc/tutorials/cognition/durations affect recognition.pd b/doc/tutorials/cognition/durations affect recognition.pd
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+#N canvas 448 122 530 585 10;
+#X text 91 14 Note durations affect recognition;
+#X text 117 91 (from Thinking in Sound p.52);
+#X text 57 122 "Sequences of tones forming melodies are perceived as
+more than a series of pitches \, and seem to have an emergent property
+characteristic of the particular pattern- in other words \, they form
+distinctive auditory gestalten or temporal compounds. If melodies can
+be considered as temporal compounds \, then we would expect to find
+a 'temporal template' for melody recognition that has both upper and
+lower durational limits." [1];
+#X text 31 479 [1] "Thinking in sound: the cognitive psychology of
+human audition" \, ed. S. McAdams and E. Bigand. Oxford University
+Press \, 1993 \, p52;
+#X text 81 294 play happy birthday fast/slow;
+#X text 79 320 play twinkle twinkle little star fast/slow;
+#X obj 0 0 cnv 15 580 40 empty empty durations_affect_recognition 20 12
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+#X text 258 24 'cognition' by Hans-Christoph Steiner;
diff --git a/doc/tutorials/cognition/ear dominance.pd b/doc/tutorials/cognition/ear dominance.pd
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+#X text 258 24 'cognition' by Hans-Christoph Steiner;
+#X text 36 166 The original experiment is from:;
+#X text 46 182 Deutsch \, D. (1975). Musical Illusions. Scientific
+American \, 233 \, pp92-104.;
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+#X msg 16 272 \; pd dsp \$1;
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+#X text 35 51 Most listeners perceive this stream as a tone alternating
+back and forth from ear to ear \, while alternating between high and
+low pitches. What is actually happening is that the high and low tones
+are alternating in each ear \, but at opposite times.;
+#X text 35 119 Your dominant ear tells the brain that the pitch of
+the tone is changing \, while both ears track the position of the high
+pitched tone.;
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diff --git a/doc/tutorials/cognition/identification of order.pd b/doc/tutorials/cognition/identification of order.pd
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+#X text 74 63 There are four distinct sounds being played in a sequence.
+Determine the order of the sequence of the sounds.;
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+#X text 97 619 (Warren 1968 \; Warren et al. 1969 \; Warren and Obusek
+1972);
+#X obj 192 279 hip~ 3000;
+#X text 347 280 speech 'ee';
+#X text 167 119 (from Thinking in Sound \, p.40);
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+#X text 258 24 'cognition' by Hans-Christoph Steiner;
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