“…The relative stability of the Series B scores can probably be attributed to the fact that all the age groups, including the youngest ones, scored poorly on these items, because of the complex processes they elicited (analogical modifications in spatially and logically organized drawings). Facon and Nuchadee (2010) found that a similar pattern of performance on the 36 items (Series A, Ab, and B) of the CPM was displayed by three different groups (DS, intellectual disability, unselected), although other studies have identified distinctive patterns of errors made by people with DS (Gunn & Jarrold, 2004;Vakil & Lifshitz-Zehavi, 2012). Results also showed that the decline observed in fluid intelligence, as measured by the CPM, is far from linear between 20 and 69 years.…”