1. The first few weeks.—
- The nervous system is not developed. The special senses are not responsive—neither sight, hearing, taste, nor smell.
- There are no voluntary muscular movements, no coördinations of muscles.
- Nervous and muscular tissues undeveloped.
- Special senses undeveloped, no recognition.
- It has no mind—no faculties, morality, intellect, memory, reason, judgment.
- In short, it has nothing innate—no principle of either God, soul, or religion.
- No will power. The muscular and nervous tissues are not yet able to perform their functions, except such as are reflex and of an involuntary character.
- No expression.
2. A few weeks after birth.—
- Impressions of light perceptible.
- Sensations slightly improved.
- Expression still blank.
- No volition.
- No recognition.
- Cry the only sound.
3. Three months.—
- Special senses improved.
- The eye steadier. The child begins to recognize its mother, etc.
- Utters sounds of satisfaction.
- Perceives sounds indistinctly.
- No coördinate movement.
- Upper extremities more active.
- Expression of face improved—smiles.
4. Six months.—
- Muscular tissues more developed—crawls.
- No coördination of muscular action.
- Sight improved—recognizes mother, father, etc.
- Excretions involuntary.
- Expressions of pain and satisfaction more palpable.
- Hearing improved—listens to sounds.
- Playfulness.
- Makes sounds of satisfaction and dissatisfaction more distinctly. No articulation.
5. One year.—
- Special senses more developed.
- Coördination still imperfect.
- Excretion involuntary.
- Upper extremities more active.
- Fear manifested.
- The dawn of want.
- Recognizes a few objects.
- Pleasure expressed as well as anger.
- Likes and dislikes exhibited in some degree.
- Beginning of articulation.
- Sounds more distinctly recognized.
- Sight more perfect.
- Taste slightly developed.
- Smell—no discrimination.