Although there are many physiological and psychological gender differences in humans, memory, in general, is fairly stable across the sexes. By studying the specific instances in which males and females demonstrate differences in memory, we are able to further understand the brain structures and functions associated with memory.
It is within specific experimental trials that differences appear, such as methods of recalling past events, explicit facial emotion recognition tasks, and neuroimaging studies regarding size and activation of different brain regions. Research seems to focus especially on gender differences in explicit memory. Like many other nuances of the human psyche, these differences are studied with the goal of lending insight to a greater understanding of the human brain.
History of research
Perceptions of gender differences in cognitive abilities date back to ancient Greece, when the early physician Hippocrates dubbed the term 'hysteria' or 'wandering womb' to account for emotional instability and mental illness in women. This diagnosis survived up until the mid-19th century and the beginning of the women's suffrage movement, and was used as evidence for women's inability to handle intellectual work. Prominent physicians of this era, including neurologist Sigmund Freud, argued that women were biologically suited to homemaking and housework, as they did not have enough blood to power both the brain and the uterus. When women began attending university in the late 19th and early 20th centuries, opponents asserted that the high demands of post-secondary education on the female brain would render women sterile.
The mass entrance of women into the workplace during World War I to replace the conscripted men fighting overseas, provided a turning point for views on women's cognitive abilities. Having demonstrated that they were capable of functioning in the workplace, women gained the right to vote in post-war United States, Canada, and the United Kingdom. Though women were able to vote and hold paid employment, they were still not regarded as intellectually equal to men. The development of the encephalization quotient by Harry Jerison in 1973 seemed to confirm popular beliefs and about women's cognitive abilities; this quotient was one of the first means of indirectly measuring brain size, and it demonstrated that women have, on average, smaller brain areas than men.
Specific areas of memory
The results from research on sex differences in memory are mixed and inconsistent, as some studies show no difference, and others show a female or male advantage.
Short-term memory
Women have consistently demonstrated a stronger short-term memory than men on tests. This is supported by data that gauges learning ability in terms of word lists and the development of strategies that improve the ability to learn new things and impede interference; however, there is also data that indicates that men are better at short-term memory tasks than women when visual stimuli is a factor, but this research lacks consistency.
Autobiographical memory
Memory loss
Research suggests that there may be gendered differences in rates of memory decline. While research on the subject has not always been consistent, it's clear that men and women experience significantly different rates of memory decline throughout their life.
It was once decided that the difference in memory decline between genders was due to the typically longer lifespan of a woman, however, this has since been disproven. The difference between the lifespan of a male and female is not great enough to explain the additional onset of memory decline from disease that woman experience.
Alzheimer's disease
As men and women age, dementia become more likely to manifest. Dementia has been reported to affect up to 5% of people over the age of 65. Of the different types of dementia, Alzheimer's disease is the most common, accounting for up to 65% of dementia cases. Research into the disease is ongoing, but there appears to be evidence supporting the claim that Alzheimer's manifests differently between the sexes. There is also evidence that Alzheimer's disease is more common in women than in men.