Emotions are rapidly differentiated from an initial capacity for excitement
(K.M.B. Bridges, 1932).  Today, there is great interest in genetically determined temperamental characteristics from which personality forms, such as sociability .
Fear
Delight
Excitement
Distress
Anger
Disgust
Elation
Affection for adults
Affection for children
Joy
Jealousy
Months        0          3          6          9          12         15        18         21        24       27
K. M. B. Bridges, (1932). Emotional development in early infancy. Journal of Genetic Psychology, 37. Created by Dr. Gordon Vessels 2005