Listed in the present bibliography are reports which appeared between September 15, 1976 and July 1, 1978. Also listed are reports that appeared earlier but which had not been included in the three previous bibliographies. Criteria for including articles are given in the introduction to the original bibliography. References in the present bibliography are listed alphabetically; they are numbered consecutively, starting where the second supplement left off. With each reference which reports an empirical study there are descriptors of the subject population and of the test of field dependence-independence and psychological differentiation used in the study. An explanation of each is given in the introduction to the original bibliography. The index follows the bibliography. The classificatory scheme used in composing the index is also explained in the introduction to the original bibliography. A section, "unindexed references," which follows the index, lists reports which were not yet available for indexing. (Author/CTM). (125pp.).