1st Week--Sensitive to light, reaction to touch, evidences of audition, sensibility to taste. 2nd Week--Notices candle, facial reaction suggesting pleasure. 3rd Week--Tears. 4th Week--Smiles and vowel sounds. 1st Month--Taste, smell, touch, sight, hearing. Sleeps two hours at a time, 16 hrs. out of 24. 2nd Month--Occasional strabismus, recognizes human voice, turns head toward sound, pleased with music and with human faces. Laughs at tickling. Clasps with four fingers by 8th week. First consonants. 3rd Month--Cries with joy at sight of mother or father. Eyelids not completely raised when child looks up. Knows sound of watch at 9th week. Listens with attention. 4th Month--Eye movements perfect. Sees objects move toward eye. Joy at seeing itself in mirror. Opposes thumb. Head held up permanently. Sits up with support to back. Begins to imitate. 5th Month--Discriminates strangers. Pleasures of crumpling and tearing papers, pulling hair, or ringing bell. Sleeps 10 or 11 hrs. without food. Consonants l and k. Seizes and carries objects to mouth. 6th and 7th Month--Raises self to sitting posture. Laughs. Raises and drops arms when pleasure is great. Teeth begin to appear. Astonishment shown by open mouth and eyes. Turns head as sign of refusal. 8th and 9th Months--Stands on feet without support. Claps hands for joy. Has fear of dogs. Turns over when laid face down. Turns head to light when asked where it is. Questions understood before child can speak. Voice more modulated. 10th, 11th, 12th Months--First attempts at walking. Sitting has become a habit. Stands without support. Whispering begins. Pushes chair. Obeys command, "Give the hand." 13th, 14th, 15th Months--Says "Papa" and "Mama." Raises itself by chair. Imitates coughing, and swinging of arms. Walks without support. Understands ten words. 16th, 17th, 18th, 19th Months--Sleeps 10 hrs. at a time. Associates words with objects and movements. Blows horn, strikes with hand or foot, waters flowers, tries to wash hands, to comb and brush hair, to execute the other imitative movements. 20th to 24th Months--Marks with pencil and paper. Executes orders with surprising accuracy. 25th to 30th Months--Distinguishes colors. Makes sentences of several words. Begins to climb and jump and to ask questions. 30th to 40th Months--Goes up stairs without help. Clauses formed. Words distinctly spoken. Influence of dialect appears. Much questioning. Beyond 40th Month--See Binet-Simon and other tests and norms. TRABUE LANGUAGE SCALE C(1) _Write only one word on each blank Seven minutes time allowed_