Past research has shown that being faced with negative stereotypes about one's group can hamper intellectual performance, and Carr and Steele reasoned it could also affect financial decision making.
Geologic evidence shows that southern African has been slowly rising for the past 100 million years, yet it has not experienced a tectonic collision for nearly 400 million years.
In fact, in line with past experience, capital expenditure in the oil sector has dropped sharply in many producing countries, including the United States.