Continuing changes in North American demographic distributions and patterns call into question the relevance of a psychology field that historically has not been inclusive of underrepresented and diverse populations. To promote accuracy and appropriate representation in psychology, the focus of the discipline must be expanded to include diverse groups that accurately reflect population distributions. How will psychology programs handle the teaching of an increasingly diverse student population? How will the science of psychology build a knowledge base that can be generalized to the population as a whole? New priorities for research, teaching, and practice must be developed so that the body of knowledge within psychology will be more accurate, relevant, and applicable. Changing demographics inevitably will move the field toward the full consideration of diversity in ways that are inclusive and truly reflect the varied contexts of our changing population. Two questions are, how soon and with what tools?