Believe it or not, many children are congenitally resistant to the natural ways of giving affection and love. They resist eye contact, they do not want to be touched, and they do not care for focused attention. … Many parents eventually resign themselves to what they conclude is “what the child wants.” This is a disastrous mistake. Even the extremely resistant child needs everything we have talked about concerning unconditional love. However, since he is uncomfortable accepting it, we parents must gradually teach this child to receive love comfortably.
[W]hen a child finds something to be quite humorous … parents have the opportunity to make eye contact, physical contact, and focused attention while commenting on the humorous subject. Parents must usually be quick in doing this because the defenses of a truly resistant child are down only briefly. We’ve got to “get in and get out” or a child may defend against similar tactics in the future.
[W]hen a child has accomplished something for which he is justifiably proud … parents can make eye and physical contact (and focused attention if appropriate) while praising a child. Again, we must be careful not to overdo it, especially by prolonging it; “get in and get out.”Dr. Ross Campbell, How to Really Love Your Child, 1977, pp. 119 – 120