|  | Left | Right | N | ||||||
---|---|---|---|---|---|---|---|---|---|---|
 |  | β | β |  | ||||||
 |  | Step 1 | Step 2 | Step 3 | t in step 3 | Step 1 | Step 2 | Step 3 | t in step 3 |  |
TD | Age (months) | 0.172 | 0.097 | 0.108 | 0.331 | 0.067 | −0.532 | −0.592 | −2.036 | 33 |
 | Non-verbal performance |  | 0.095 | 0.097 | 0.327 |  | 0.763* | 0.751* | 2.846 |  |
 | Riddles |  |  | −0.018 | −0.075 |  |  | 0.104 | 0.479 |  |
 | R | 0.172 | 0.182 | 0.182 |  | 0.067 | 0.477 | 0.483 |  |  |
 | Adjusted R2 | 0.030 | 0.033 | 0.033 |  | 0.004 | 0.227 | 0.233 |  |  |
 | ΔR2 | 0.000 | 0.000 | 0.000 |  | 0.000 | 0.176 | 0.154 |  |  |
ASD | Age (months) | −0.051 | 0.013 | −0.061 | −0.284 | −0.288 | −0.246 | −0.294 | −1.390 | 30 |
 | Non-verbal performance |  | −0.292 | −0.392 | −1.692 |  | −0.187 | −0.251 | −1.096 |  |
 | Riddles |  |  | 0.197 | 0.761 |  |  | 0.126 | 0.498 |  |
 | R | 0.051 | 0.289 | 0.322 |  | 0.288 | 0.340 | 0.352 |  |  |
 | Adjusted R2 | 0.003 | 0.084 | 0.104 |  | 0.083 | 0.116 | 0.124 |  |  |
 | ΔR2 | 0.000 | 0.016 | 0.000 |  | 0.050 | 0.050 | 0.023 |  |  |