I believe the answer is: Defeated
The defeated group in hetherington's term refers to the people who are failing in maintaining the marriage commitment with their partner.
The problems that caused the failure mostly come from either emotional issues or personal issues between the couples.
Answer:
The security of infant attachment is reasonably stable; later in childhood, securely attached children appear to be more socially skillful, more curious and persistent in approaching new tasks, and more mature. The effect of securely attached child is that it affects how they parent their own children.
Explanation:
Attachment to a protective caregiver helps infants to regulate their negative emotions in times of stress and distress and to explore the environment, even if it contains somewhat frightening stimuli. Child develops internal working model of attachment - a representation of the self, attachment figures and relationships in general which guides later interactions with people.
I walked to the store listening music
The answer is male biased sex ratio. The operational sex ratio is distressed by the span of time each sex expends in considerate for young or in on the road to recovery from mating. For example, if females cease mating commotion to care for young but males do not then more males would be ready to mate, thus creating a male biased operational sex ratio.