The phrase "emotional unavailability" refers to a person who has difficulty connecting with or expressing their emotions to others. They might struggle to be open, vulnerable, or supportive in relationships. Full definition
Emotional infidelity is any situation where some degree of emotional unavailability on the part of one partner is interfering with nurturing a particular aspect of the primary relationship. (marriage.com)
By contrast, mothers» emotional unavailability only affected children's adjustment to school. (fatherhoodinstitute.org)
Maternal insensitivity and emotional unavailability influences the infant's ability to develop a capacity for arousal regulation.25 Insensitive maternal behaviour results in increased anger, distress and crying — together, these might reflect an infant's poor arousal regulation.26 PPD also alters the capacity to regulate the reciprocal interaction between mothers and their infant via two patterns: intrusiveness and withdrawal. (child-encyclopedia.com)