A strength of Harlow's research is that it has practical applications. The principles of the research that contact comfort is most important in forming an attachment has been used in the real world to highlight risk factors and find prevention strategies for poor human attachments. His findings have been used by social workers and clinical psychologists in understanding that a lack of comfort may be a risk factor in development, allowing them to intervene to prevent poor outcomes. Therefore, Harlow's research is an important part of applied psychology when explaining formation of attachments.