The author attempts to test the "Oedipus-complex" hypothesis--the psychoanalytic idea that under certain conditions (such as the long-post partum sex taboo) males are sexually attracted to their mothers and as a consequence certain fears and anxiety are generaated. The hypothesis is tested at the societal-level using ethnographic data.

This book chapter tests new and pre-existing theories (Horton, Field, Bacon et al.) for the cause of variation in drinking across cultures. Folktale content is used to test psychological variables more directly than has been done previously. Folktale content is analyzed programmatically with an acknowledged error level of up to one-third. Results lend support to Field's 1962 theory that loose social organization facilitates drinking.

This study investigates the strategic mode of competition in both games of strategy and folk talkes. Various significant relationships between games of strategy, folktales, social complexity, and child rearing variables are observed.

Acerbi, Kendal, and Tehrani examine the relationship between population size and cultural complexity as measured by a non-technological cultural domain: folktales. Three measures of complexity for folktales are analyzed, 1) number of tale types, 2) number of narrative motifs, and 3) number of traits in variants of two international folktales. Findings suggest that the relationship between cultural complexity and population may depend on the domain, as different domains vary in cultural maintenance and transmission.

The authors of the present study investigate the psychological correlates of heavy drinking by using thematic content of folktales as a reflection of the cognitive processes of people in a given society. Subsequently, thematic variables are compared to ethnographic ratings in order to better understand how and if thought and reality correlate. Results are examined in the context of previous findings by other researchers, namely D. Horton (1943).

Aiming to respond to the question "How has knowledge in forager oral narrative been maintained accurately for dozens of generations?", this study explores the myth transmission rules among forager societies. The first hypothesis anticipates that these rules constrain transmission and contexts similarly across forager societies. The authors suggest that these rules are information technology aids to minimize the chances of errors and loss of information. Related to this, the authors formulate eight hypotheses of what these rules will mandate during myth transmission: 1) skilled storytellers to pass down stories, 2) minimal low-distractions, 3) numerous people 4) multiple generations, 5) measures that identify and correct mistakes, 6) measures that maintain the audience's attention, 7) measures that sanction rule violations, and 8) measures that encourage rule compliance. There is enough evidence to support 7 out of the total of 9 hypotheses. These results show the relevance of studying the rules concerning myth and knowledge transmission across generations.

Causal factors to the development of crime are examined. Frequency of theft and personal crime are tested against these causal factors in a search for correlations.

This study tests the relationship between menstrual taboos and castration anxiety. The author posits that the extensiveness of menstrual taboos is determined by the average castration anxiety. Using various measures of castration anxiety, the author finds significant support for this hypothesis.

The authors compare language phylogenies and spatial distributions with folktale frequencies of Indo-European peoples in order to reconstruct their cultural transmission. A stronger association is found between folktale frequency and language phylogeny than has been proposed in earlier literature studies, indicating that vertical transmission is more influential on folktale distribution than horizontal transmission through spatial proximity. Finally, the frequencies of certain folktales appear to trace the ancestral divergences of Indo-European languages to a much deeper level than previously though, suggesting that folktales are representative of broader features of culture, rather than recent literary inventions.

This study investigates possible relationships between the need for achievement and power (as measured in folktales) with rates of suicide and homicide in preindustrial societies. Analysis suggests that homicide is not associated with either the need for achievement or power, but suicide is positively associated with the need for power.