it ignores the fact that the quality of attachment is important, not just having someone to provide food. EG: interactional synchrony and reciprocity are important processes that help attachments to develop and strengthen. Furthermore, Schaffer and Emerson found that 39% of babies were attached to the person who did not feed them, demonstrating that it was attention which is the most important, not food. therefore, one could argue that the learning theory of attachment is too reductionist.