Baltimore Longitudinal Study of Attachment

Study Overview


Begun in 1964, the study provided a naturalistic longitudinal field examination of the development of infant-mother attachment throughout the infant's first year of life. The study also included a controlled laboratory session known as the "Strange Situation" for further exploration of infant attachment behavior.

The main purposes of the study were to (1) identify the various behaviors that may be classed together as attachment behavior and to trace their development; (2) describe how these behaviors become organized and focused on the mother figure, determining the nature of the infant's attachment to her; (3) describe individual differences in the development of attachment behavior and the organization of attachment; (4) ascertain how environmental influences, and in particular, the behavior of the mother figure, affect this development, (5) investigate the relationship between infant-mother attachment and other aspects of social and cognitive development.

Study Author(s): 
Sampling Procedures: 

Mothers of eligible infants were contacted through pediatricians in private practices, in most instances, during mother's pregnancy.

Contact and Data Access

1. I will use the dataset solely for statistical analysis and reporting of aggregated information and not for investigation of a specific individual or organization. 2. I will produce no links among the Distributors' datasets or among the Distributor's data and other datasets that could identify individuals or organizations. 3. I represent neither I, nor anyone I know, has any prior knowledge of the possible identification of any study participants in any dataset that I am being licensed to use. 4. I will not knowingly divulge any information that could be used to identify individual participants in the study, nor will I attempt to identify or contact any study participant and I agree to use any precautions necessary to prevent such identification. 5. I will not reproduce the dataset except as it is necessary for scholarly purposes. I will destroy the dataset upon completion of my scholarly work with it. 6. I will not share data from the dataset (in any form or by any means) with any third party, as I understand that all users of the data must obtain it directly from the distributor. 7. I will make appropriate acknowledgement of the contributor and distributor of the dataset in any manuscript or publication. 8. The distributor makes no warranties, express or implied, by operation of law or otherwise regarding or relating to the dataset.
Citation Requirements: 
Users of the data must include a bibliographic citation acknowledging the use of these data in any publication or presentation in which these data are used. Such citations should appear in footnotes or in the reference section of any such manuscript.
The original collector of the data, SSRI, and the relevant funding agencies, bear no responsibility for the use of the data or for interpretations and inferences based upon such users.
Distribution Date: 

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