often attribute problems to individual abnormality or failures to adjust. After the boom in alienation research that characterized the 1950s and 1960s, interest in alienation research subsided, although in sociology it was maintained by the Research Committee on Alienation of the International Sociological Association (ISA). In the 1990s, there was again an upsurge of interest in alienation prompted by the fall of the Soviet Union, globalization, the information explosion, increasing awareness of ethnic conflicts, and post-modernism. Geyer believes the growing complexity of the contemporary world and post-modernism prompted a reinterpretation of alienation that suits the contemporary living environment. In late 20th and early 21st century sociology, it has been particularly the works of Felix Geyer, Lauren Langman and Devorah Kalekin-Fishman that address the issue of alienation in the contemporary western world. Powerlessness Alienation in the sense of a lack of power has been technically defined by Seeman as "the expectancy or probability held by the individual that his own behaviour cannot determine the occurrence of the outcomes, or reinforcements, he seeks." Seeman argues that this is "the notion of alienation as it originated in the Marxian view of the worker's condition in capitalist society: the worker is alienated to the extent that the prerogative and means of decision are expropriated by the ruling entrepreneurs". More succinctly, Kalekin-Fishman says, "A person suffers from alienation in the form of 'powerlessness' when she is conscious of the gap between what she would like to do and what she feels capable of doing". In discussing powerlessness, Seeman also incorporated the insights of the psychologist Julian Rotter. Rotter distinguishes between internal control and external locus of control, which means "differences (among persons or situations) in the degree to which success or failure is attributable to external factors (e.g. luck, chance, or powerful others), as against success or failure that is seen as the outcome of one's personal skills or characteristics". Powerlessness, therefore, is the perception that the individual does not have the means to achieve his goals. More recently, Geyer remarks that "a new type of powerlessness has emerged, where the core problem is no longer being unfree but rather being unable to select from among an overchoice of alternatives for action, whose consequences one often cannot even fathom". Geyer adapts cybernetics to alienation theory, and writes that powerlessness is the result of delayed feedback: "The more complex one's environment, the later one is confronted