Table 3.

Correlations between flicker fusion performance and reading improvement scores.

	Baseline 5% FFT (T1)	Baseline 75% FFT (T1)	Reading accuracy improvement	Reading rate improvement	Reading comp improvement	Rapid naming improvement	5% FFT improvement	75% FFT improvement
Baseline 5% FFT (T1)	–	.593**	− .250*	− .049	.006	.008	− .650**	− .171
Baseline 75% FFT (T1)		–	− .208	− .102	− .036	.111	− .294*	− .617**
Reading accuracy Improvement			–	.345**	.233	− .180	.357**	.089
Reading rate improvement				–	.385**	− .285*	− .065	.122
Reading comp improvement					–	− .390**	− .092	.169
Rapid naming improvement						–	− .037	− .186
5% FFT improvement							–	.200
75% FFT improvement								–

According to Cohen’s guidelines, r ≥ 0.10, r ≥ 0.30, and r ≥ 0.50, represent small, medium, and large effect sizes, respectively; Improvements scores were calculated as post-training score (T2) minus baseline (T1) score.

FFT Flicker Fusion Threshold (Hz).

*p < .05, ** p < .01.