ed only
as substitutes when one or more of the regular tests have been rendered,
by coaching or otherwise, undesirable.[17]

[17] See p. 137 _ff._ for explanations regarding the calculation of
mental age and the use of alternative tests.

Of the 36 new tests, 27 were added and standardized in the various
Stanford investigations. Two tests were borrowed from the Healy-Fernald
series, one from Kuhlmann, one was adapted from Bonser, and the
remaining five were amplifications or adaptations of some of the earlier
Binet tests.

Following is a complete list of the tests of the Stanford revision.
Those designated _al._ are alternative tests. The guide for giving and
scoring the tests is presented at length in Part II of this volume.

_The Stanford revision and extension_

_Year III._ (_6 tests, 2 months each._)
1. Points to parts of body. (3 to 4.)
Nose; eyes; mouth; hair.
2. Names familiar objects. (3 to 5.)
Key, penny, closed knife, watch, pencil.
3. Pictures, enumeration or better. (At least 3 objects enumerated
in one picture.)
(a) Dutch Home; (b) River Scene; (c) Post-Office.
4. Gives sex.
5. Gives last name.
6. Repeats 6 to 7 syllables. (1 to 3.)
Al. Repeats 3 digits. (1 success in 3 trials. Order correct.)

_Year IV._ (_6 tests, 2 months each._)
1. Compares lines. (3 trials, no error.)
2. Discrimination of forms. (Kuhlmann.) (Not over 3 errors.)
3. Counts 4 pennies. (No error.)
4. Copies square. (Pencil. 1 to 3.)
5. Comprehension, 1st degree. (2 to 3.) (Stanford addition.)
"What must you do": "When you are sleepy?" "Cold?" "Hungry?"
6. Repeats 4 digits. (1 to 3. Order correct.) (Stanford addition.)
Al. Repeats 12 to 13 syllables. (1 to 3 absolutely correct, or 2 with
1 error each.)

_Year V._ (_6 tests, 2 months each._)
1. Comparison of weights. (2 to 3.)
3-15; 15-3; 3-15.
2. Colors. (No error.)
Red; yellow; blue; green.
3. AEsthetic comparison. (No error.)
4. Definitions, use or better. (4 to 6.)
Chair; horse; fork; doll; pencil; table.
5. Patience, or divided rectangle. (2 to 3 trials. 1 minute each.)
6. Three commissions. (No error. Order correct.)
Al. Age.

_Year VI._ (_6 tests, 2 months each._)
1. Right and left. (No error.)
Right hand; left ear; right eye.
2. Mutilated pictures. (3 to 4 correct.)
3. Counts 13 penni