The possibility is considered that research on intelligence is entering or is about to enter a time of crisis. First, it is suggested that the decline of the psychometric paradigm as the primary means for studying intelligence was due in part to the failure of users of the paradigm to meet in a highly successful way four challenges that confronted their research. Next, it is shown how, on the surface, users of the information-processing paradigms currently in favor seem successfully to have met these challenges. Then, it is shown that, at a deeper level, the level of success is not as great as it is at a surface level. Finally, the following four conclusions are drawn in response to the challenges that still seem to be facing psychologists studying intelligence: (1) All of the methods have overlapping strengths and weaknesses; (2) more attention should be focused on evaluation criteria of relative successes of the various methods; (3) confidence in the validity of the psychological phenomenon is increased if it appears almost without regard to method; and (4) laboratory studies of intelligence should be supplemented with studies of real-world behaviors. (Author/RL)