GLYPH<s49>GLYPH<s57>GLYPH<s48> GLYPH<s50>GLYPH<s48>GLYPH<s48> GLYPH<s50>GLYPH<s49>GLYPH<s48> GLYPH<s50>GLYPH<s50>GLYPH<s48> GLYPH<s50>GLYPH<s51>GLYPH<s48> GLYPH<s48> GLYPH<s48>GLYPH<s46>GLYPH<s50> GLYPH<s48>GLYPH<s46>GLYPH<s51> GLYPH<s48>GLYPH<s46>GLYPH<s52> GLYPH<s32> GLYPH<s109> GLYPH<s97> GLYPH<s120> GLYPH<s40> GLYPH<s88> GLYPH<s32>GLYPH<s40> GLYPH<s41> GLYPH<s32> GLYPH<s41> GLYPH<s84> GLYPH<s101>GLYPH<s109>GLYPH<s112>GLYPH<s101>GLYPH<s114>GLYPH<s97>GLYPH<s116>GLYPH<s117>GLYPH<s114>GLYPH<s101>GLYPH<s32>GLYPH<s40>GLYPH<s75>GLYPH<s41> GLYPH<s48>GLYPH<s46>GLYPH<s53> FIG. 3: (Color online) The measured quantity max$_{ω}$ [ X ( ω, T )] = max$_{ω}$( | χ$_{3}$ ( ω, T ) | ) × k$_{B}$T/ [ ϵ$_{0}$ (Δ χ$_{1}$ ) $^{2}$a$^{3}$] plotted vs. temperature. The continuous line is the number of correlated molecules estimated from T χ$_{T}$ (see [8]) with an arbitrary normalization chosen so that it coin- cides with the experimental points at 202 K. and the phases collapse fairly well on a single master curve, as predicted by Eq. (1). A weak departure from scaling occurs at low ω for the highest T . This is not surprising: scaling should not hold far above T$_{g}$ , where the dynamical correlations become short-ranged [12, 13]. Furthermore, the nonlinear response results both from trivial dielectric saturation effects [15, 21, 22] (always present for ωτ < 1), and from the non trivial dynamical correlations contribution. As the latter vanishes when ω → 0 ([12, 13]), the contribution of the trivial saturation effect should dominate at high T and low ω . The observed departure from scaling can thus be explained by the different T and ω dependencies of the two contributions. Figure 3 gives the T dependence of the maximum value of X ( ω, T ), reached for ω = ω ∗ = 2 πf ∗ . Since scaling is well obeyed, Eq. (1) tells us that this maximum value is proportional to N$_{corr}$ ( T ). A clear increase of this quantity as T decreases toward T$_{g}$ is visible in Fig. 6