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Objective: To investigate risk factors associated with impaired attention-related executive functions (EFs) at age 11 and working memory at age 15. Methods: Data from participants of the population-based 2004 Pelotas Birth Cohort at ages 11 (n=3,582) and 15 (n=1,950) were analyzed. The study measured attentional control, cognitive flexibility, and selective attention using the Test of Everyday Attention for Children (TEA-Ch). Spatial working memory was assessed by the Cambridge Neuropsychological Test Automated Battery (CANTAB). Logistic regression was employed to explore the relationship between perinatal and childhood exposures and EF impairment. Results: Low maternal education had a significant negative impact on EFs. At age 11, it was associated with decreased attentional control (OR = 3.04; 95%CI 2.09-4.43), and at age 15, it was linked to impaired spatial working memory (OR = 2.21; 95%CI 1.58-3.09). Additional risk factors included low household income, black or brown maternal skin color, high parity, prematurity, low birth weight, and multiple siblings. Breastfeeding, regardless of duration, was found to be a protective factor against impaired cognitive flexibility (OR = 0.38; 95%CI 0.22-0.65). Conclusion: This study underscores the lasting impact of perinatal exposures on EF development. Policies that mitigate the negative effects of risk factors and promote EF development, especially among vulnerable populations, are needed. Objective attentionrelated related EFs (EFs 1 Methods populationbased population based 200 n=3,582 n3582 n 3 582 (n=3,582 n=1,950 n1950 950 (n=1,950 analyzed TEACh. TEACh TEA Ch . (TEA-Ch) CANTAB. CANTAB (CANTAB) impairment Results OR 3.04 304 04 95CI CI 95 2.094.43, 209443 2.09 4.43 , 2 09 4 43 2.09-4.43) 2.21 221 21 1.583.09. 158309 1.58 3.09 58 1.58-3.09) income color parity prematurity weight siblings Breastfeeding duration 0.38 038 0 38 0.220.65. 022065 0.22 0.65 22 65 0.22-0.65) Conclusion development populations needed 20 n=3,58 n358 (n=3,58 n=1,95 n195 (n=1,95 (TEA-Ch (CANTAB 3.0 30 9 094 2.094.43 20944 209 2.0 443 4.4 2.09-4.43 2.2 583 1.583.09 15830 158 1.5 309 5 1.58-3.09 0.3 03 220 0.220.65 02206 022 0.2 065 0.6 6 0.22-0.65 n=3,5 n35 (n=3,5 n=1,9 n19 (n=1,9 3. 2.094.4 2094 2. 44 4. 2.09-4.4 1.583.0 1583 1. 1.58-3.0 0. 0.220.6 0220 02 06 0.22-0.6 n=3, n3 (n=3, n=1, n1 (n=1, 2.094. 2.09-4. 1.583. 1.58-3. 0.220. 0.22-0. n=3 (n=3 n=1 (n=1 2.094 2.09-4 1.583 1.58-3 0.220 0.22-0 n= (n= 2.09- 1.58- 0.22- (n