[en] In this work a method is suggested of a search for nonstatistical regularities in behaviour of radiative strength fucntion of primary γ-transitions from the (n, γ) reaction. The correlation analysis of the primary γ-transition intensities for the ¹⁷⁴Yb, ¹⁶⁸Er, ¹⁷⁸Hf nuclei has been carried out on the basis of the data from thermal and 2 keV neutron capture experiments. The positive values obtained for the correlation coefficient in the case of ¹⁷⁴Yb and ¹⁶⁸Er allow the conclusion to be made, at a high level of confidence, about the presence of considerable deviations of the radiative strength function from mean statistical value. 20 refs.; 6 figs.; 1 tab