As with all joint concentrations at Harvard, joint concentrations with psychology are individualized programs of study that require that you complete both course requirements in psychology and your other field and a thesis that combines your interests in the two fields. Your course requirements will vary depending upon which is your primary and which is your secondary field, so you will need to decide this this spring. And because thesis research is an integral part of your program, you will want to identify early on faculty in each department whose particular interests match yours. Although two fields may combine easily on an intellectual level, if the disciplines' departments at Harvard do not have specific faculty who can help you undertake interdisciplinary study and research, you will not be able to create a successful joint program. Finally, concentrations differ widely on their policies toward joint concentrations, so you should get similar information from the other field you are considering.
Joint concentrations require a special level of interest and motivation.
If you believe you are highly interested in and motivated to combine two disciplines while at Harvard, you will need to complete a joint concentration application. If you are unable to complete this material before you must declare a concentration, you will have to declare a concentration in your primary field of interest and may be able to change to a joint concentration later. These tracks contain two main elements, coursework and research. And research is both recommended early in your undergraduate career and required in the senior thesis. The course load is higher than a regular program of study and the research requirements will demand a great deal of initiative on your part.