Firstly - if that's the only three examples you can give, then you're probably not looking hard enough! :)
On a serious note, however - I've posted on my blog on the issue for the past two or so years. Simply head to Sex and Superstitions at Podblack.com. There's also two podcasts that have addressed it - more recently the Token Skeptic podcast and over time, the Skeptic Zone podcast.
My Masters degree looks at the measurement of paranormal belief and the relative contribution of women to strong beliefs in the sample.
I should point out that my Podblack site has much more about:
- cultural influences, socio-economic influences, etc. and historical background as to why women are more likely to believe;
- the recorded presence of women at conferences, what has been recognized and reasons why, and whether there needs to be more representation at skeptic conferences by minorities in general;
- what is already being done by science outreach groups that could be imitated by skeptical groups if they were serious about imbalances - if that is actually feasible / necessary;
- factors involving the use of sex and 'being sexy smart' to advertise women as skeptics and why this isn't necessarily the only or even the best approach.
There's plenty more that can be said, plenty more that can be asked. I'd suggest you also listen to the podcast/radio episode on Gender in Skepticism by the Skeptically Speaking radio show.
Taken from the Token Skeptic podcast (#4):
What do we know about whether women have a tendency to be more skeptically-minded or not?
Psychological research demonstrates that cognitive differences do not equal cognitive deficiencies – in the case of paranormal and supernatural beliefs, there is certainly evidence that women are more likely to affirm their beliefs, but it does not mean that they are definitely more credulous or lacking in intellect. From statistical analysis of surveys to a recent article published in the Journal of Cognitive Neuroscience on the presence of dopamine and its influence on the brain, we naturally learn more and more over time about belief in the ‘weird things’.
The paranormal is a term that generally refers to alleged phenomena or events asserted to be outside the range of ordinarily accepted forces (Lett, 1990) and belief in the paranormal is no longer considered an eccentricity in the modern world. We can find ‘psychic readings’ in popular women’s magazines and thousands of people attend the ‘speaking with the dead’ extravaganzas of John Edward and Sylvia Browne. Paranormal beliefs are often associated with practices of the occult, magic (as opposed to dramatic performances, sleight-of-hand and dextrous manipulation of items to create illusions), and superstitions. Studies of paranormal beliefs are often done in conjunction with pseudoscientific beliefs, which, according to Preece and Baxter (2000), involves a set of ideas or theories which are claimed to be scientific but which are contrary to standard science and have failed empirical tests (or which cannot in principle be tested), such as the claims of ‘new age’ practices like crystal healing or reiki.
The study of sex differences in science refers to biological differences such as chromosomes and internal and external sex organs; ‘gender’ describes characteristics that an individual’s society defines as masculine or feminine (Unger & Crawford, 1992). Research into believers of paranormal and pseudoscientific claims often compare how males and females respond to surveys on the existence of UFOs, ghosts, whether astrology accurately reflects our lives and so forth (Gallup & Newport, 1991; Wolfradt, 1997; Shermer, 2001). In 2007, a representative quota sample of 1,005 adults in Great Britain aged from 16 years and upward were interviewed via telephone, demonstrating that within the sample belief in telepathy was very strong amongst women (47%) with one in four consulting their horoscope regularly and one in four of those believing ‘that horoscopes accurately predicted events in their lives’ (Ipsos-MORI, 2007).
Paranormal beliefs can be influenced by cultural factors such as family, peer groups, media influences, and the persuasive power of social institutions (e.g., religious or cultural groups) and education (Clark, 2002; Díaz-Vilela & Álvarez-González, 2004; Schriever, 2000). Socialisation has been used to explain gender differences concerning the extent of paranormal beliefs. Clark (2005) for example, noted the prevalence of popular culture and new age beliefs in teenage females, while Mason, Webber, Singleton and Hughes (2006) recorded a shift towards secular views of the world, some of which incorporate new age beliefs and practices.
Studies using intelligence tests in conjunction with belief in the paranormal have yielded mixed findings, with some failing to find a relationship (e.g., Wiseman & Watt, 2004) and others demonstrating higher IQ scores in believers than disbelievers (Jones, Russell, & Nickel, 1977). Otis and Alcock (1982) found that an individual’s level of skepticism is negatively related to superstitious beliefs and individuals in certain academic fields may possess a greater level of skepticism than others. Individuals from the natural sciences have been found to be more skeptical than individuals from the humanities, arts, and education, while individuals working in the arts and humanities tend to be relatively more superstitious than individuals in other academic fields (Happs, 1987; Otis & Alcock, 1982; Shermer, 1997). If we take into consideration how traditionally men dominate the fields of science and mathematics, women may be at a disadvantage when it comes to developing a ‘skeptical mindset’.
While formal education increases the likelihood of skepticism and a reduction in superstition (Vyse, 1997), Aarnio and Lindeman’s (2006) study of 239 Finnish volunteers demonstrated a disassociation between intuitive thinking (rather than analytical thinking) and skepticism. Paranormal-believing participants demonstrated less emotional stability and assigned more purpose to artificial and random events, thereby pointing to a problem with confusion of core knowledge (knowledge learned without instruction, in terms of intuitive comprehension of physical, biological and psychological entities as well as their processes). Hood (2009) argues that females (as biologically defined) are more inclined as a group towards intuitive reasoning, involving genetic predisposition. His theory of the ‘supersense’, or the human brain’s pre-wiring towards supporting intuitions and superstitions, is suggested as a key to understanding how we can rationalise beliefs. There is also a commonly-held stereotype that women demonstrate better performances on social cognition tests, such as face processing and theory of mind in comparison to men, leading to women demonstrating social skills and understanding other’s perspectives more easily.
A very recent study using a drug called L-dopa (sometimes applied in treatment of Parkinson’s disease by raising levels of the neurotransmitter dopamine in the brain) led experimenters to infer that its presence decreased sensitivity to perceptual-cognitive decisions and promoted conservative in the sample of skeptically-minded participants (Krummenacher, Mohr, Haker & Brugger, 2009). These results led to the conclusion that paranormal ideation might profoundly modulate pain assessment, assessment of risky scenarios, recognition of patterns and decision making. An earlier study by Mohr, Graves, Gianotti, Pizzagalli, and Brugger (2001) also contributed to investigating what commonalities there are between creative thinking, paranormal belief and delusional ideation – leading to further questions as to whether dopamine is the “gullibility neurotransmitter” for non-skeptical people (particularly when the first study only used males and the second used a small number of subjects).
As research continues into the origins and influences upon paranormal and pseudoscientific belief, the contributions of cognitive neuroscience and technology brings us closer to understanding better the need to believe in ‘weird things’. Creative thinking, intuition and highly-developed interpersonal skills cannot be discounted as useless, yet the potential for paranormal and pseudoscientific beliefs to lead members of either sex towards dangerous practices shouldn’t be ignored either.