Sociotropy is a personality trait characterized by excessive investment in interpersonal relationships and usually studied in the field of social psychology. People with sociotropy tend to have a strong need for social acceptance, which causes them to be overly nurturant towards people who they do not have close relationships with. Sociotropy can be seen as the opposite of autonomy, because those with sociotropy are concerned with interpersonal relationships, whereas those with autonomy are more concerned with independence and do not care so much for others. Sociotropy has been correlated with feminine sex-role orientation in many research experiments.
The Sociotropy-Autonomy Scale (SAS) was introduced by Aaron T. Beck as a means of assessing two cognitive-personality constructs hypothesized as risk factors in depression. The scale focuses on the two personality traits of Sociotropy (social dependency) and Autonomy (satisfying independency. The development of the SAS was gathered through patient self-reports and patient records collected from therapists. Using psychometrics, from the sample of 378 psychiatric patients questions were placed into a two-factor structure where the final pool of items was 60-109.  From there each 30 items generated three factors for Sociotropy: Concern About Disapproval, Attachment/Cocern About Separation, and Pleasing Others; and three for Autonomy: Individualistic or Autonomous Achievement, Mobility/Freedom from Control of Others, and Preference for Solitude. The SAS has 60 items rated on a 5 point scale (ranging from 0 to 4). Scores are then totaled separately on each of the dimensions. Since the development of the scale there have been some modifications to it. The current SAS in use decomposes Sociotropy into two factors ("Neediness" and "Connectedness"). Neediness was associated with the symptoms of depression, while Connectedness was defined as a sensitivity towards others and associated with valuing relationships.
Since the development of the SAS, many other measures of personality constructs have been developed to assess other personality traits with some overlapping with the SAS, but examining for different traits.
Sociotropic individuals react differently when faced with situations that involve self-control. Sociotropic individuals consume more food, or try to match peer's eating habits when they believe doing so will make the peer more comfortable. This is often hypothesized as being a result of the individual attempting to achieve social approval and avoid social rejection. The social pressure and dependence can cause a lost of self-control in an individual, especially if they are unaware of their desire for social acceptance.
Much of the research on Sociotropy focuses on the links between personality and the risk for depression. People who are very dependent are classified as sociotropic individuals, and are more prone to depression as they seek to sustain their low self-esteem by establishing secure interpersonal relationships. Sociotropic individuals are heavily invested into their relationships with other people and have higher desires for acceptance, support, understanding, and guidance which becomes problematic when relationships fail. People who are sociotropic and going through failed relationships will likely become depressed due to their intensified feelings of abandonment and loss. Researchers have a hard time figuring out exactly how much personality affects risk for depression as it is hard to isolate traits for research, although they have concluded that a person can either be Sociotropic or independent, but not both.
Sociotropy has been linked to other personality traits such as introversion and lack of assertion. Lack of assertion has been hypothesized to be due to the need to please others in order to build on the interpersonal relationships. Individuals who are sociotropic will avoid confrontational situations in order to not be abandoned. 
Along the lines of lack of assertion there has also been research studying the connection between sociotropy and shyness. The characteristic interpersonal dependence and fear of social rejection are also attributes of shyness. The research shows that many of the items from the SAS relate to dimensions of dependence and preoccupations for receiving approval of others which is problematic in interpersonal relationships for people who are shy. Individuals who are shy and sociotropic have internal conflicts to want to avoid others as well as having strong motives to approach people.  The results from such research concludes that sociotropy predicts other symptoms of discomfort in assertive situations and in conversations.
Research on the subject also seems to connect a link between higher levels of anxiety and sociotropy. By putting excessive amounts of energy into dependent relationships the amount of anxiety an individual has will rise. The behavioral disposition that causes an individual to depend on others for personal satisfaction can also have an effect on their anxiety levels.  The research concluded that anxiety and sociotropy are positively correlated in many situations such as Social Evaluation, Physical Danger, and Ambiguous Situations. Sociotropy and anxiety are present in these situations due to the fact that they are social by definition and therefore are associated with emphasis on social relationships which are characteristic of sociotropic individuals.
- The Sociotropy-Autonomy Scale (SAS)
- National Library of Medicine entry
- WILEY Interscience Sociotropy-autonomy and interpersonal problems
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