Professor Emeritus Research Interests Animal Cognition Brain & Behavior History: Psychology and Behavioral Neuroscience Education Education: TEACHING EXPERIENCE I taught undergraduate and graduate classes from 1967-2010 among the following courses. Introductory Psychology (Undergraduate) Experimental Psychology (U) History of Psychology (U, Graduate) Biological Foundations of Behavior (U, G) Neuroanatomy for Behavioral Scientists (G) Comparative Psychology (U) Seminar: Physiological Bases of Behavior (G) Seminar: Neural Correlates of Learning (G) Seminar: Evolution of the Brain and Intelligence (U, G) Seminar: Cognitive Processes in Animals (G) Seminar: Evolution of Consciousness (U) Seminar: Comparative Neuroanatomy for Behavioral Scientists (G) I received the Psi Chi Award for Graduate Teaching (the department’s highest annual award for graduate teaching) in 1985 and 2001. Given what I taught, 1985 was for Neuroanatomy for Behavioral Scientists and 2001 was for History of Psychology. M.S. Degree Students Supervised (27) Ed M. Barge, Jr., 1968 Charles S. Noble, 1969 John W. Davis, 1969 Joseph W. Evans, 1969 G. Rufus Sessions, 1969 Mary G. Boyd, 1971 A. Stephen Hill, 1971 Judson C. Mitcham, 1971 A. Bartow Ray, Jr., 1971 Michael John Prewett, 1973 Vender Shara Knowles, 1974 Thomas Neill Crosby, 1977 Stephen John Huse, 1977 Elsie Lois Smith, 1978 Gordon Thomas Frost, 1979 Gregory Steven Miller, 1980 Linda M. Noble, 198 Leonard E. Burdyn, Jr., 1983 Debra Faye Terrell, 1983 Marcy Hafer Ramsay, 1984 Jack A. Palmer, 1987 David M. Compton, 1989 Julia A. Phillips, 1990 Cheryl Young, 1990 Michael Shain, 1995 Aileen Bailey, 1996 Douglas Baker, 1999 PhD Students Supervised (21) John W. Davis, 1972 John E. Mendoza, 1973 Judson C. Mitcham, 1975 Mary Gilbert Boyd, 1975 William F. McDaniel, 1977 William D. Gammon, 1978 Thomas N. Crosby, 1982 Elizabeth L. Walden, 1984 G. Thomas Frost, 1984 John F. Lindsay, Jr., 1985 Linda M. Noble, 1985 Debra F. Terrell, 1988 Jack A. Palmer, 1990 Kelley M. Barham, 1990 Soon-Juan Chee, 1990 David M. Compton, 1991 Julia A. Phillips, 1992 Cheryl D. Young, 1994 Aileen M. Bailey, 1999 Mark S. Schmidt, 1999 David A. Leavens, 2001 Research Research Interests: Publications Request publications: rkthomas@uga.edu OR obtain from most universities’ libraries. PUBLICATIONS IN MOST RECENT 5 YEARS Thomas, R. K. (2022). Florene Mary Young and Margaret May Zeigler: The First Women in Professorial Ranks, Department of Psychology, University of Georgia. American Journal of Psychology. 135(2), 225-236. Thomas, R. K. (2022). "Pure" versus "Applied" Psychology: An Historical Conflict between Edward B. Titchener (Pure) and Ludwig R. Geissler (Applied). The Psychological Record, 72, 131-143.DOI: https://doi.org/10.1007/s40732-021-00460-3 Thomas, R. K. (2018-2019). Following are 10 invited entries for the Encyclopedia of Animal Cognition and Behavior, Edited by Jennifer Vonk and T. K. Shackelford. Each is 2K, 5K, or 10K words. Morgan’s Canon (10K) Learning to Learn (5K) Oddity (5K) Relational Concepts and Symbolic Logic (5K) Relative Numerousness (5K) Johannes Mȕller (2K) Hermann von Helmholtz (5K) Reductionism (5K) Christine Ladd-Franklin (2K) Roger K Thomas (2K) Publications including the above are in chronological order within the categories: Articles in Scholarly Journals Chapters in Scholarly Books Other Archived, Published Scholarly Writings. Articles in Scholarly Journals Rollins, J.B., Thomas, R.K., & Remley, N. (1965). An investigation of drive summation in a water runway. Psychonomic Science, 3, 183- 184. Thomas, R. K., Jr., & Peacock, L. J. (1965). A method for measuring brain lesions. Psychonomic Science, 3, 184. Thomas, R. K., Jr. (1966). Immediate and subsequent effects of brain damage in rats. Journal of Comparative and Physiological Psychology, 62, 472-475. Peacock, L. J., Hodge, M. H., & Thomas, R. K., Jr. (1966). Ultrasonic measurements and automatic analysis of general activity in the rat. Journal of Comparative and Physiological Psychology, 62, 284-288. Barge, E. M., & Thomas, R. K., Jr. (1969). Conditional discrimination learning in the squirrel monkey. Psychonomic Science, 15, 161 -162. Thomas, R. K., Jr. (1969). The influence of Sernylan on the EEG and averaged evoked potential in the squirrel monkey. Laboratory Primate Newsletter, 8, 19-21. Noble, C. S., & Thomas, R. K. Jr. (1970). Oddity learning in the squirrel monkey. Psychonomic Science, 19, 305-307. Thomas, R. K., Jr. (1970). Mass function and equipotentiality: A reanalysis of Lashley's retention data. Psychological Reports, 27, 899-902. Davis, J. W., Thomas, R. K., Jr., & Adams, H. E. (1971). Interactions of scopolamine and physostigmine with ECS and one-trial learning. Physiology and Behavior, 6, 219-222. Mitcham, J. C., & Thomas, R. K., Jr. (1972). Effects of substantia nigra and caudate nucleus lesions on avoidance learning in rats. Journal of Comparative and Physiological Psychology, 81, 101-107. Thomas, R. K., & Boyd, M. G. (1973). A comparison of Cebus albifrons and Saimiri sciureus on oddity performance. Animal Learning and Behavior, 1, 151-153. Thomas, R. K., & Hill, A. S. (1973). The caudate nucleus and avoidance learning: A reevaluation. Bulletin of the Psychonomic Society, 1, 346-348. Mendoza, J. E., & Thomas, R. K. (1975). An investigation of the effects of posterior parietal and frontal neocortical lesions in the squirrel monkey. Journal of Comparative and Physiological Psychology, 89, 170- 182. Thomas, R. K., & Weir, V. K. (1975). The effects of lesions in the frontal or posterior association cortex of rats on maze III. Physiological Psychology, 3, 210-214 Weir, V. K., & Thomas, R. K. (1975). Failure to find spatial reversal deficits following medial frontal lesions. Bulletin of the Psychonomic Society, 5, 465-468. Czerny, P., & Thomas, R. K. (1975). Sameness-difference judgments in Saimiri sciureus based on volumetric cues. Animal Learning and Behavior, 3, 375-379. Prewett, M. J., & Thomas, R. K. (1976). Interactions of ECS and a light-dark cycle on one-way avoidance learning in rats. Physiological Psychology, 4, 118-120. Thomas, R. K., & Peay, L. (1976). Length judgments in squirrel monkeys: Evidence for conservation? Developmental Psychology, 12, 349-352. Thomas, R. K., & Kerr, R. S. (1976). Conceptual conditional discrimination in Saimiri sciureus. Animal Learning and Behavior, 4, 333-336. Thomas, R. K., & Crosby, T. N. (1977). Absolute and relative class conceptual behavior in squirrel monkeys (Saimiri sciureus). Animal Learning and Behavior, 5, 265-271. Boyd, M. G., & Thomas, R. K. (1977). Posterior association cortex lesions in rats: Mazes, pattern discrimination and reversal learning. Physiological Psychology, 5, 455-461. McDaniel, W. F., McDaniel, S. E., & Thomas, R. K. (1978). Thalamo-cortical projections to the temporal and temporal association cortices in the rat. Neuroscience Letters, 7, 121-125. McDaniel, W. F., & Thomas, R. K. (1978). Temporal and parietal association cortex lesions and spatial and black-white reversal learning in the rat. Physiological Psychology, 6, 300-305. Thomas, R. K., & Ingram, D. K. (1979). Conceptual volume judgments by squirrel monkeys. American Journal of Psychology, 92, 33-43. Thomas, R. K., Fowlkes, D., & Vickery, J. D. (1980). Conceptual numerousness judgments by squirrel monkeys. American Journal of Psychology, 93, 247-257. Gammon, W. D., & Thomas, R. K. (1980). Interactive effects of light/dark cycle, ECS, physostigmine, and scopolamine on one-way avoidance learning in rats. Physiological Psychology, 8, 72-76. Thomas, R. K., & Chase, L. (1980). Relative numerousness judgments by squirrel monkeys. Bulletin of the Psychonomic Society, 16, 79-82. Thomas, R. K. (1980). Evolution of intelligence: An approach to its assessment. Brain, Behavior and Evolution, 17, 454-472. Thomas, R. K. (1980). Attention, motivation and emotion: Entia non sunt multiplicanda praeter necessitatem. Behavioral and Brain Sciences, 3, 517-518. Thomas, R. K. (1982). The assessment of primate intelligence. Journal of Human Evolution, 11, 247-255. Thomas, R. K., & Frost, T. (1983). Oddity and dimension-abstracted dimension-abstracted oddity in squirrel monkeys. American Journal of Psychology, 96, 51-64. Burdyn, L. E. Jr., Noble, L. M., Shreves, L. E., & Thomas, R. K. (1984). Long-term memory for concepts by squirrel monkeys. Physiological Psychology, 12, 97-102. Burdyn, L. E., Jr., & Thomas, R. K. (1984). Conditional discrimination with conceptual simultaneous and successive cues in the squirrel monkey (Saimiri sciureus). Journal of Comparative Psychology, 98, 405-413. Thomas, R. K. (1985). Are cognitive and radical behaviorism incompatible? Behavioral and Brain Sciences, 7, 650. [Reprinted in A.C. Catania & S. Harnad (Eds.) The operant behaviorism of B.F. Skinner: Comments and consequences. New York: Cambridge University Press, 1988.] Noble, L. M., & Thomas, R. K. (1985). Oddity and dimension-abstracted oddity (DAO) in humans. American Journal of Psychology, 98, 549-557. Thomas, R. K. (1987). Overcoming contextual variables, negative results, and Macphail's null hypothesis. Behavioral and Brain Sciences, 10, 680-681. Thomas, R. K., & Noble, L. M. (1988). Visual and olfactory oddity learning in rats: What evidence is necessary to show conceptual behavior? Animal Learning & Behavior, 16, 157-163. Thomas, R. K. (1988). Misdescription and misuse of anecdotes and mental state concepts. Behavioral and Brain Sciences, 11, 265-266. Thomas, R. K. (1988). To honor Davis and Perusse and repeal their glossary of processes of numerical competence. Behavioral and Brain Sciences, 11, 600. Terrell, D. F., & Thomas, R. K. (1990). Number-related discrimination and summation by squirrel monkeys (Saimiri sciureus sciureus; Saimiri boliviensus boliviensus) based on the number of sides of polygons. Journal of Comparative Psychology, 104, 238-247. Steirn, J. N., & Thomas, R. K. (1990). Comparative assessments of intelligence: Performances of Homo sapiens sapiens on hierarchies of oddity and sameness-difference (SD)tasks. Journal of Comparative Psychology, 104, 326-333. Thomas, R. K. (1992). Interactive models of cognitive abilities of monkeys and humans (Saimiri sciureus sciureus; S. boliviensus boliviensus; Homo sapiens sapiens). International Journal of Comparative Psychology, 5, 179- 190. Thomas, R. K., & Young, C. D. (1993). A note on the history of electrical stimulation of the human brain. Journal of General Psychology, 120, 73-81. Thomas, R. K. (1994). A critique of Nakagawa"s (1993) "Relational rule learning in the rat." Psychobiology, 22, 347-348. Thomas, R. K. (1994). Pavlov Was "Mugged." History of Psychology newsletter, 26, 86-91. [Please see Thomas (1997) below.] Thomas, R. K. (1994). Pavlov used a bell. Commentary on Littman on Pavlov Bell. Psycoloquy 5.63.pavlov.bell.2.thomas. [Please see Thomas (1997) below.] Thomas, R. K. (1994, December). Pavlov"s dogs "dripped saliva at the sound of a bell." Further commentary on Littman on Pavlov-Bell. Psycoloquy 5.80.pavlov-bell.4.thomas. [Please see Thomas (1997) below.] Thomas, R. K. (1996). Investigating cognitive abilities in animals: Unrealized potential. Cognitive Brain Research, 3, 157- 166. Thomas, R. K. (1997). Correcting some Pavloviana regarding "Pavlov's Bell" and Pavlov's "mugging." American Journal of Psychology, 110, 115-125. Bailey, A.M., & Thomas, R.K. (1998). An investigation of oddity concept learning by rats. Psychological Record, 48, 333-344. Thomas, R. K., Phillips, J.A., & Young, C.D. (1999). Comparative cognition: Human numerousness judgments. American Journal of Psychology, 112, 215-233. Bailey, A. M., & Thomas, R. K. (2001). The Effects of Nucleus Basalis Magnocellularis (nBM) Lesions in Long-Evans Hooded Rats (Rattus norvegicus) on Two Learning Set Formation Tasks, Delayed Matching-to-Sample Learning, and Open Field Activity. Behavioral Neuroscience, 115, 328-340. Leavens, D. A., Hopkins, W. D., & Thomas, R. K. (2004). Referential communication by chimpanzees (Pan troglodytes). Journal of Comparative Psychology, 118, 48-57. Bailey, A.M., McDaniel, W.F, & Thomas, R.K. (2007) Approaches to the study of higher cognitive functions related to creativity in nonhuman animals. Methods, 42, 3-14. Thomas, R. K. (2007) Recurring errors among recent history of psychology textbooks. American Journal of Psychology, 120, 477-495. Thomas, R. K. (2009). Ludwig Reinhold Geissler and the founding of the Journal of Applied Psychology. American Journal of Psychology, 122, 395-403. Thomas, R. K. (2011). The Southern Society for Philosophy and Psychology and Francis Cecil Sumner. American Journal of Psychology, 124, 355-364. Thomas, R. K. (2016). Priority Disputes in the History of Psychology with Special Attention to the Franz-Kalischer Dispute About Who First Combined Animal Training with Brain Extirpation to Investigate Brain Functions. The Psychological Record., 66, 191-199. Thomas, R. K. (2022). "Pure" versus "Applied" Psychology: An Historical Conflict between Edward B. Titchener (Pure) and Ludwig R. Geissler (Applied). The Psychological Record, 72, 131-143.DOI: https://doi.org/10.1007/s40732-021-00460-3 Thomas, R. K. (2022). Florene Mary Young and Margaret May Zeigler: The First Women in Professorial Ranks, Department of Psychology, University of Georgia. American Journal of Psychology. 135(2), 225-236. Chapters in Scholarly Books Thomas, R. K., & Walden, E. L. (1985). The assessment of cognitive development in human and nonhuman primates. E. S. Watts (Ed.), Nonhuman primate models for human growth and development. (pp. 187-215). New York: Alan R. Liss, Inc. Thomas, R.K. (1986). Vertebrate intelligence: A review of laboratory studies. In R.J. Hoage & L. Goldman (Eds.). Animal intelligence: Insights into the animal mind. (pp. 37-56). Washington: Smithsonian Institution Press. Thomas, R. K., & Lorden, R. B. (1989). What is psychological well-being? Can we know if primates have it? In E. F. Segal (Ed.), The psychological well-being of captive nonhuman primates, (pp. 12-26). Park Ridge, NJ: Noyes Publications. NOTE Re Chapter Above: References from the 26 chapters in the book above were intermingled in a single Reference section at the end of the book. References from our manuscript are appended to our chapter above in uneven pages, because they began near the bottom of page 18 of the manuscript and each page was numbered. To avoid possible confusion by showing that partial last page of text and by showing page numbers, the pages were trimmed accordingly. Thomas, R. K. (1992). Primates' conceptual use of number: Ecological perspectives and psychological processes. In T, Nishida, W. C. McGrew, P. Marler, M. Pickford, & F. B. de Waal (Eds.). Topics in Primatology, 1: Human Origins (pp. 305-314). Tokyo: Tokyko University Press. Thomas, R. K., & Lorden, R. B. (1993). Animals Use of Number: A Conservative View. S. T. Boysen & and J. Capaldi (Eds.) The Development of Numerical Ability: Animal and Human Models (pp. 127-147). Hillsdale, NJ: Lawrence Erlbaum Associates, Inc. Thomas, R. K. (1993). Squirrel Monkeys, Concepts, and Logic. In R. G. Burton (Ed.), Minds: Natural and Artificial, (pp. 101-119). State University of New York Press. Thomas, R. K. (1998). Lloyd Morgan's Canon. In G. Greenberg & M. Haraway (Eds.), Comparative Psychology: A Handbook. (pp. 156-163), New York: Garlad Publishing Co. Thomas, R. K. (Accepted for publication). Austin Southwick Edwards (1885-1976). In J. L. Pate (Ed.). Southern Society for Philosophy and Psychology Presidents and Presidential Addresses. Amsterdam: Rodopi Press. Thomas, R. K. (Accepted for publication) Shepherd Ivory Franz (1874-1933). In J. L. Pate (Ed.). Southern Society for Philosophy and Psychology Presidents and Presidential Addresses. Amsterdam: Rodopi Press. Thomas, R. K. (Accepted for publication). Ludwig Reinhold Geissler (1879-1932). In J. L. Pate (Ed.). Southern Society for Philosophy and Psychology Presidents and Presidential Addresses. Amsterdam: Rodopi Press. Thomas, R. K. (Accepted for publication). Roger K. Thomas (1939 - ). In J. L. Pate (Ed.). Southern Society for Philosophy and Psychology Presidents and Presidential Addresses. Amsterdam: Rodopi Press. Thomas, R. K. (Accepted for publication). Lelon J, Peacock, III (1928-2013). In J. L. Pate (Ed.). Southern Society for Philosophy and Psychology Presidents and Presidential Addresses. Amsterdam: Rodopi Press. Other Archived, Published Scholarly Writings Thomas, R. K., Jr., King, F. A. and Roberts, L. (1969a). Avoidance conditioning in normal and prefrontal lesioned squirrel monkeys. International Neurosciences Abstracts, 1, 6. Thomas, R. K., Jr. (1969b). Prefrontal lesions and classical conditioning in squirrel monkeys. International Neuroscience Abstracts, 1, 55. Thomas, R. K. (1982). Review of Beyond sociobiology by J. D. & J. I. Baldwin. Ethology and Sociobiology, 3, 45-46. NOTE: Re Above Book Review: My views of animals ability to use conditional reasoning evolved after 1982. Please scroll below to Thomas (2012) "Conditional reasoning by nonhuman animals." Thomas, R.K. (1983). Statistics. Lab Animal, 12, 64. Thomas, R. K. (1986). Conceptual behavior in nonhuman animals: What evidence is necessary? Primate Report, 14, 93. Thomas, R. K. (1987). Overcoming contextual variables, negative results, and MacPhail’s null hypothesis. Behavioral and Brain Sciences, 10, 681. Thomas, R.K. (1988). Are radical and cognitive behaviorism incompatible? In A.C. Catania & S. Harnad (Eds.). The operant behaviorism of B. F. Skinner. Comments and consequences (pp. 367-369). New York, NY: Cambridge University Press. Thomas, R.K. (1989). Review of Intelligence and evolutionary biology. H.J. Jerison & I. Jerison (Eds.) Contemporary Psychology,34, 1088- 1089. Thomas, R. K. (1993). Introduction: A Biopsychology Festschrift in Honor of Lelon J. Peacock, Journal of General Psychology, 120, 5. Thomas, R. K. (1994). Pavlov Was "Mugged." History of Psychology Newsletter, 26, 86-91. Boeglin, J. A., & Thomas, R. K. (1996). Where does the term neuropsychology come from? International Journal of Psychology, 31, 162. NOTE RE Boeglin & Thomas Above: This is a published abstract of a presentation at the 1996 meeting of the International Congress of Psychology in Montreal, CA. For the full presentation go to "Presentations" link on this website and scroll to Boeglin & Thomas, 1996.] Thomas, R. K. (1999). Shepherd Ivory Franz (1874-1933). In J. A. Garraty (Editor-in-Chief), American National Biography. New York: Oxford University Press. Thomas, R. K. (1999). Francis Cecil Sumner (1895-1954). In J. A. Garraty (Editor-in-Chief), American National Biography. New York: Oxford University Press. Thomas, R K (2000). Vladimir Mikhailovich Bekhterev (1857-1927). In A. E. Kasdin (Editor in Chief). Encyclopedia of Psychology (Vol.1, pp. 398-399) Washington DC: APA Encyclopedia of Psychology. Thomas, R. K (2000). Shepherd I. Franz (1874-1933). In A. E. Kasdin (Editor in Chief). Encyclopedia of Psychology of Psychology (Vol. 3, pp.396-398). Washington, DC: APA Encyclopedia. Thomas, R.K. (2000). Heinrich Kluver (1897-1979 ). In A. E. Kasdin (Editor in Chief). Encyclopedia of Psychology, (Vol. 4, pp. 449) Washington: American Psychological Association. Thomas, R.K. (2000). Clifford T. Morgan (1915-1976). In A. E. Kasdin (Editor in Chief). Encyclopedia of Psychology, (Vol. 5, pp. 306-307) Washington: American Psychological Association. Thomas, R.K. (2000). George John Romanes (1848-1894). In A. E. Kasdin (Editor in Chief). Encyclopedia of Psychology (Vol. 7, pp.113-115). Washington DC: Encyclopedia of Psychology. Thomas, R. K. (2000). Letter to Editor: What's Fair? APS Observer, 13, 4. Thomas, R. K. (2001). Florene Mary Young (1901-1994). The Feminist Psychologist, 28, 27, 32. Thomas, R. K. (2001). Hazards of "Emergentism" Originally published in History & Theory of Psychology Eprint Archive: York University, Canada. Thomas, R. K. (2003). Crawford W. Long's Discovery of Anesthetic Ether: Mesmerism, Delayed Publication, and the Historical Record. Originally published in History & Theory of Psychology Eprint Archive: York University, Canada. Thomas, R. K. (2005). Gosset, William Sealy. In Encyclopedia of Statistics in Behavioral Science. West Sussex, UK: John Wiley & Sons, Ltd. Thomas, R. K. (2005). Galton, Francis. In Encyclopedia of Statistics in Behavioral Sciences. West Sussex, UK: John Wiley & Sons, Ltd. Thomas, R. K. (2006). Celestia Susannah Parrish (1853-1918): Pioneering Psychologist, Native Virginian, and "Georgia's Greatest Woman." The Feminist Psychologist, 33, pp. 16 & 2 Thomas, R. K. (2009). Review of Harry Whitaker, C.U.M. Smith, and Stanley Finger (Eds.). Brain, Mind and Medicine: Essays in Eighteenth-Century Neuroscience. New York: Springer, 207. 376 pp. $59.95 (hardcover). ISBN-13 978-0-70-966-6. Journal of the History of the Behavioral Sciences, 45, 176-179. Thomas, R. K. (2012). Conditional reasoning by nonhuman animals. In Norbert Seel (Ed.). Encyclopedia of the Sciences of Learning: Part 3 (pp. 742-745). New York, NY: Springer-Verlag. (Manuscript Version) Thomas, R. K. (2012). Learning set formation and conceptualization. In Norbert Seel (Ed.). Encyclopedia of the Sciences of Learning: Part 12 (pp. 1966-1968). New York, NY: Springer-Verlag. Thomas, R. K. (2012). Bekhterev, V. M. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol 1, pp. 110-112). New York: Springer-Verlag. Thomas, R. K. (2012). Broca, Pierre Paul. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol 1, pp. 137-138). New York: Springer-Verlag. Thomas, R. K. (2012). Flourens, Pierre. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 1, pp. 442-443). New York: Springer-Verlag. Thomas, R. K. (2012). Galton, F. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 1, pp. 462-464). New York: Springer-Verlag. Thomas, R. K. (2012). Geissler, L. R. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol 1, pp.: 465-466). New York: Springer-Verlag. Thomas, R. K. (2012). Harlow, Harry. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 1, pp. 504-506). New York: Springer-Verlag. Thomas, R. K. (2012). Klüver, H. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol 1, pp. 606-607). New York: Springer-Verlag. Thomas, R. K. (2012). Mesmer, Franz Anton. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 2, pp. 672-673). New York: Springer-Verlag. Thomas, R. K. (2012). Parrish, C. S. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 2, pp. 765-767). New York: Springer-Verlag. Thomas, R. K. (2012). Romanes, G. J. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 2, pp. 957-959). New York: Springer-Verlag. Thomas, R. K. (2012). Sumner, Francis Cecil. In Robert W. Reiber (Ed.). Encyclopedia of the History of Psychological Theories (Vol.2, pp. 1049-1050). New Yorl: Springer-Verlag. Thomas, R. K. (2012). Von Helmholtz, Hermann. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 2, pp. 1170-1172). New York: Springer-Verlag. Thomas, R. K. (2012). University of Georgia, History of Psychology at the. In Robert W. Rieber (Ed.). Encyclopedia of the History of Psychological Theories (Vol. 2, pp. 1148-1152). New York: Springer-Verlag. Thomas, R. K. (2012). Conditional reasoning by nonhuman animals. In Norbert Seel (Ed.). Encyclopedia of the Sciences of Learning: Part 3 (pp. 742-745). New York, NY: Springer-Verlag. Thomas, R. K. (2012). Learning set formation and conceptualization. In Norbert Seel (Ed.). Encyclopedia of the Sciences of Learning: Part 12 (pp. 1966-1968). New York, NY: Springer-Verlag. Thomas, R. K. (2017). Is psychological science committing "suicide" by linguistic muddling. Animal Sentience. Invited commentary on Peňa-Guzmán’s article, “Can nonhuman animals commit suicide?” For access to Peňa-Guzmán’s article and commentaries: http://animalstudiesrepository.org/animsent/vol2/iss20/ Thomas, R. K. (2019). The surprising (and Long) story of the first use of ether in surgery. TheConversation.com, March 28, 2019. [TheConversation is a nonprofit web magazine with affiliation with many major universities. It publishes articles by academics together with a website journalist whose job is to make it more appealing to a broad range of readers.] Thomas, R. K. (2018-2019). Following are 10 invited entries for the Encyclopedia of Animal Cognition and Behavior, Edited by Jennifer Vonk and T. K. Shackelford. Each is 2K, 5K, or 10K words. Morgan’s Canon (10K) Learning to Learn (5K) Oddity (5K) Relational Concepts and Symbolic Logic (5K) Relative Numerousness (5K) Johannes Mȕller (2K) Hermann von Helmholtz (5K) Reductionism (5K) Christine Ladd-Franklin (2K) Roger K Thomas (2K)
