| Facial action coding system P Ekman, WV Friesen Environmental Psychology & Nonverbal Behavior, 1978 | 17014 | 1978 |
| An argument for basic emotions P Ekman Cognition & emotion 6 (3-4), 169-200, 1992 | 14600 | 1992 |
| Unmasking the face: A guide to recognizing emotions from facial clues P Ekman, WV Friesen Ishk, 2003 | 9400 | 2003 |
| Constants across cultures in the face and emotion. P Ekman, WV Friesen Journal of personality and social psychology 17 (2), 124, 1971 | 8483 | 1971 |
| Emotion in the human face: Guidelines for research and an integration of findings P Ekman, WV Friesen, P Ellsworth Elsevier, 2013 | 7532 | 2013 |
| Emotional and conversational nonverbal signals P Ekman Language, knowledge, and representation: Proceedings of the sixth …, 2004 | 6833 | 2004 |
| Emotions revealed P Ekman Bmj 328 (Suppl S5), 2004 | 6785 | 2004 |
| The repertoire of nonverbal behavior: Categories, origins, usage, and coding P Ekman, WV Friesen semiotica 1 (1), 49-98, 1969 | 6661 | 1969 |
| Pictures of facial affect P Ekman Palo Alto, 1976 | 6475 | 1976 |
| Universals and cultural differences in facial expressions of emotion. P Ekman Nebraska symposium on motivation, 1971 | 5903 | 1971 |
| Facial expression and emotion. P Ekman American psychologist 48 (4), 384, 1993 | 5771 | 1993 |
| Telling lies: Clues to deceit in the marketplace, politics, and marriage (revised edition) P Ekman WW Norton & Company, 2009 | 4838 | 2009 |
| Autonomic nervous system activity distinguishes among emotions P Ekman, RW Levenson, WV Friesen science 221 (4616), 1208-1210, 1983 | 4415 | 1983 |
| Universals and cultural differences in the judgments of facial expressions of emotion. P Ekman, WV Friesen, M O'sullivan, A Chan, I Diacoyanni-Tarlatzis, ... Journal of personality and social psychology 53 (4), 712, 1987 | 4269* | 1987 |
| What the face reveals: Basic and applied studies of spontaneous expression using the Facial Action Coding System (FACS) P Ekman, EL Rosenberg Oxford University Press, USA, 1997 | 3685 | 1997 |
| The nature of emotion: Fundamental questions P Ekman Oxford University Press, 1994 | 3645 | 1994 |
| Are there basic emotions? P Ekman American Psychological Association 99 (3), 550, 1992 | 3635 | 1992 |
| Nonverbal leakage and clues to deception P Ekman, WV Friesen Psychiatry 32 (1), 88-106, 1969 | 3190 | 1969 |
| Pan-cultural elements in facial displays of emotion P Ekman, ER Sorenson, WV Friesen Science 164 (3875), 86-88, 1969 | 3009 | 1969 |
| Expression and the nature of emotion P Ekman Approaches to emotion, 319-343, 2014 | 2841 | 2014 |