close to significancep = 0.021
In older adults, for three categories this revealed significant or close to significance R 2 -values with positive slopes ( fractals , R 2 = 0.31, t -test p = 0.021; manmades , R 2 = 0.38, p = 0.015, pinks , R 2 = 0.22, p = 0.057).