Source: https://www.cambridge.org/core/journals/development-and-psychopathology/article/socially-indiscriminate-attachment-behavior-in-the-strange-situation-convergent-and-discriminant-validity-in-relation-to-caregiving-risk-later-behavior-problems-and-attachment-insecurity/9CC3305D0A241CDBAF65061F3400CFC4