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Math Anxiety

November 14, 2012

Math and physics have one thing in common. They're not just one thing, but many things rolled into a topical name. Although the interrelatedness of all things physical is stressed in its teaching, pulleys do seem to students to be quantitatively different than quanta.

It's no wonder that students are confused. Once you know that 2 + 2 = 4, they hit you with 2 x 2 = 4. Then there's trigonometry and algebra; and, for most students, some calculus. It's enough to give a student fits.[1]

Ian M. Lyons and Sian L. Beilock of the Department of Psychology, the University of Chicago have just published a paper on PLoS ONE that reports on a study of math anxiety.[2] Their research, funded by the National Science Foundation, showed that when an important math task, such as an examination, is imminent, people with higher math anxiety will actually feel pain.[2]

Subjects were selected for the study through interviews scored according to what's called the Short Math Anxiety Rating-Scale (SMARS). The high math anxiety subjects, and a control group of non-anxious individuals, completed a word task and a math task while being monitored using functional magnetic resonance imaging (fMRI), a technique in which blood flow is measured as a means of detecting brain activity.[2]

Brain regions affected by math anxiety
This is your brain on math if you have high math anxiety. These fMRI images highlight The dorso-posterior insula (INSp) and mmid-cingulate cortex, regions of the brain affected by math anxiety. Figure 1 of ref. 2 (reformatted), licensed under the Creative Commons Attribution License.[2]

The fMRI imaging showed increased activity in the dorso-posterior insula (INSp) and mid-cingulate cortex (MCC). These areas are also associated with pain perception. The INSp math anxiety regions that were active are anatomically close to the regions that are activated when a person experiences severe social rejection.

All this happens in anticipation of doing math. Quite surprisingly, this response was not seen during math performance; that is, the math, itself, doesn't hurt; rather, it's the anticipation of doing math that's painful. Since humans try to avoid pain, the result is that people with high math anxiety will avoid math. They avoid careers that require mathematics study.

Since we're on the topic of the psychology of mathematics, there's another recent paper that relates the ability to estimate, without counting, the number of objects in a group with higher mathematics skills.[3-4] Psychologists at Emory University (Atlanta, Georgia) tested the ability of 65 undergraduate college students to estimate which of two images had a greater number of objects, or a greater cumulative area.

In the number estimation test, the students were shown images of dots, in two different colors, flashed for just 200 milliseconds on a display screen (see figure). They were asked to choose which color had the greater number of dots. It's easy to distinguish ten dots from five, but some people have the ability to distinguish nine from ten dots.[4]

Dot fields for estimating testsNumber estimation images, adapted from ref. 4.

(Image rendered by the author using Inkscape).

The students were also given a series of mathematical aptitude tests, and it was found that the ability to do number estimation correlated with ability to do arithmetic; and the ability at area estimation correlated with ability to do geometry. These correlations were true even when general intelligence was considered.[3]

Stella Lourenco, lead author and a psychologist at Emory University, remarked that
"Our results clearly show that uniquely human branches of mathematics interface with an evolutionarily primitive general magnitude system... We were able to show how variations in both advanced arithmetic and geometry skills specifically correlated with variations in our intuitive sense of magnitude."[4]

References:

  1. How can I resist mentioning that Isaac Newton believed that light propagates "in fits." See, for example, Light, in Charles Hutton, "A Mathematical and Philosphical Dictionary," London, 1795.
  2. Ian M. Lyons and Sian L. Beilock, "When Math Hurts: Math Anxiety Predicts Pain Network Activation in Anticipation of Doing Math," PLoS ONE, vol. 7, no. 10 (October 31, 2012), doi:10.1371/journal.pone.0048076.
  3. Stella F. Lourenco, Justin W. Bonny, Edmund P. Fernandez and Sonia Rao, "Nonsymbolic number and cumulative area representations contribute shared and unique variance to symbolic math competence," Proc. Natl. Acad. Sci, Published online before print October 22, 2012, doi: 10.1073/pnas.1207212109.
  4. Carol Clark, "Higher-math skills entwined with lower-order magnitude sense," Emory University esciencecommons Blog, October 24, 2012.