Cool weather and Warm weather
If you are like most people, your intelligence varies from season to season. You are probably a lot sharper in the spring than you are any other time of year. A noted scientist, Ellsworth Huntington 1876 - 1947 concluded from other mans’ work and his own among peoples in different climates that climate and temperature have a definite effect on our mental abilities.
He found that cool weather is much more favorable for creative thinking than summer heat. This does not mean that all people are less intelligent in summer than they are during the rest of the year. It does mean, however, that the mental abilities of large numbers of people tend to be lowest in the summer.
Spring appears to be the best time of the year for thinking. Fall is the next-best season than winter. As for summer, it seems to be a good time to take a long vacation from thinking.
