Dar a um adolescente acesso supervisionado ao álcool vs proibição estrita
Se você agir
Acesso supervisionado / controlado ao álcool
36%
Se você não agir
Proibição estrita (pais não fornecem álcool)
21%
Porcentagem de quem mais tarde se arrepende de cada escolha. As barras e o registro completo aparecem abaixo.
Família
Última revisão 2026-05-22
Qualidade das evidências 4.5/5
Pontuação de revisão em oito dimensões segundo a
grelha de qualidade
. Cada dimensão pontuada de 1 a 5.
D1 Verificação das fontes
5/5
D2 Autoridade e independência das fontes
5/5
D3 Precisão da taxa de arrependimento
2/5
D4 Comparabilidade das fontes
4/5
D5 Padrão de Gilovich
5/5
D6 Qualidade da prosa
5/5
D7 Completude das ressalvas
5/5
D8 Qualidade da amostra
5/5
Média4.5/5
Dados proxy — não existe nenhuma pesquisa direta sobre arrependimento para esta decisão. As taxas são derivadas de pontuações de satisfação e dados de barreiras de acesso em vez de perguntas que perguntavam diretamente sobre arrependimento. Veja advertências abaixo.
Arrependimento por ação
Acesso supervisionado / controlado ao álcool
36%
36% dos adolescentes a quem foi dado acesso ao álcool sob supervisão adulta sofreram consequências prejudiciais do álcool até o 9º ano (proxy de dano à criança para arrependimento parental)
Estudantes do ensino secundário em Victoria, Austrália (contexto de norma permissiva), acompanhados a partir do 7º ano
coorte prospectiva de 3 anos; séries 7-9 (idades ~12-15)
Arrependimento por omissão
Proibição estrita (pais não fornecem álcool)
21%
21% dos adolescentes em contexto de política de proibição rigorosa (Estado de Washington) sofreram consequências prejudiciais do álcool até o 9º ano (proxy de resultado-dano)
Estudantes do ensino secundário no Estado de Washington (contexto de norma proibicionista), acompanhados a partir do 7º ano
coorte prospectiva de 3 anos; séries 7-9 (idades ~12-15)
% se arrependem desta escolha
Acesso supervisionado / controlado ao álcoolProibição estrita (pais não fornecem álcool)
36%21%
action dominates — A acção domina — a maioria arrepende-se de ter agido.
Decisões relacionadas
Decisões semanticamente semelhantes — mesmo terreno, compromissos diferentes.
Introdução precoce e adequada à idade (partes do corpo, reprodução, consentimento — antes dos 8-10 anos)Esperar até a adolescência ou evitar temas sexuais na primeira infância
The intuition behind supervised teen drinking is plausible on its surface: introducing alcohol at home, in controlled amounts, might satisfy curiosity and teach moderation before peer pressure enters the picture. The data from three decades of prospective cohort research does not support this narrative. The Australian Parental Supply of Alcohol Longitudinal Study (APSALS), which followed 1,927 families from grades 7 through 12, found that adolescents who received alcohol exclusively from their parents had 2.58 times the odds of binge drinking, 2.53 times the odds of alcohol-related harm, and 2.51 times the odds of alcohol use disorder symptoms compared to adolescents who received no alcohol from any source (Mattick et al., Lancet Public Health, 2018). Critically, those supplied only by parents were twice as likely to begin accessing alcohol from other sources the following year — the supervised exposure did not contain the behaviour, it accelerated it.
The cross-jurisdictional comparison by Smolkowski and colleagues (2011) is particularly useful for this decision frame because it provides directly comparable child-harm rates across two policy environments that map onto parental approaches. In Victoria, Australia — where supervised home drinking was normative and two-thirds of students reported it by grade 8 — 36% of students experienced harmful alcohol consequences by grade 9. In Washington State, where zero-tolerance norms prevailed and only 35% reported supervised drinking, the rate was 21%. The gap is not merely cultural: the same study found that adult-supervised drinking settings were associated with higher harmful-consequence rates within both populations. A meta-analysis pooling 7 prospective studies across Sweden, the USA, the Netherlands, and Australia found a pooled odds ratio of 2.00 (95% CI 1.72–2.32) for risky drinking among adolescents supplied alcohol by parents versus those not supplied (Mattick et al., IJERPH, 2017).
Under Gilovich and Medvec’s temporal regret framework, actions generate more intense short-term regret when their consequences materialise quickly — and parental alcohol supply consequences tend to appear within one to three years. The action-dominates pattern is consistent with the evidence: parents who gave supervised access and watched their child develop problem drinking have a clear counterfactual (I could have said no) that is cognitively vivid. Parents who maintained strict prohibition and worry their child drinks covertly face a murkier counterfactual. The proxy gap between 36% and 21% represents a 15-point differential in immediate child harm, not a direct bilateral regret survey. Both sides carry real uncertainty: a minority of prohibition-context adolescents become drinkers anyway, and a minority of supervised-access adolescents show no problem trajectory. The evidence does not justify categorical certainty in either direction — it justifies noting that, on average, the supervised-access route produced more measurable harm.
Fontes: acção
Registro de evidências
Cada número abaixo é o que cada fonte relatou, com a citação literal em que nos baseamos e como chegamos ao nosso valor. Clique em qualquer link para verificar diretamente.
2/3 fontes verificadas de forma independente palavra por palavra em relação à fonte citada
[1]Prevention Science (PMC) — Influence of Family Factors and Supervised Alcohol Use on Adolescent Alcohol Use and Harms: Similarities Between Youth in Different Alcohol Policy Contexts
Verificado
Revisado por pares
36% of Victoria (supervised-drinking context) students experienced any harmful alcohol consequence by grade 9; adult-supervised settings for alcohol use were associated with higher levels of harmful alcohol consequences
Trecho
“"Adult-supervised settings for alcohol use were associated with higher levels of harmful alcohol consequences," contrary to harm-minimization policy predictions. The relationship between supervised drinking and increased harms held true across both jurisdictions.
”
Dados da fonte de
2011-04-19
Acessado
2026-05-22
Verificação
Trecho obtido novamente de forma independente e confirmado palavra por palavra em relação à fonte citada durante nossa auditoria de fundamentação.
Cálculo
Smolkowski et al. (2011), Prevention Science 12(3):250–263. Prospective cohort of 1,945 grade-7 students (989 females) from Washington State and Victoria, Australia; analysis sample 1,888. Victoria students—where parental supervised drinking was normative and common (66% reported supervised drinking by grade 8)—experienced a 36% rate of harmful alcohol consequences by grade 9. This covers eight harms: blackouts, injuries, loss of control, and violent behaviour. Used here as the action-side regret proxy: parental decision to allow supervised access is judged by whether the child suffered measurable alcohol-related harm within 3 years. No large-scale survey directly asks parents whether they regret giving supervised access.
[2]The Lancet Public Health — Association of parental supply of alcohol with adolescent drinking, alcohol-related harms, and alcohol use disorder symptoms: a prospective cohort study
Revisado por pares
Adolescents receiving alcohol exclusively from parents had OR 2.58 (95% CI 1.96–3.41) for binge drinking, OR 2.53 (1.99–3.24) for alcohol-related harm, and OR 2.51 (1.46–4.29) for AUD symptoms vs no supply
Trecho
“"Providing alcohol to children is associated with alcohol-related harms" with no protective effect demonstrated. Parental supply only was associated with significantly elevated odds of binge drinking (OR 2.58), alcohol-related harm (OR 2.53), and alcohol use disorder symptoms (OR 2.51) compared to no supply from any source.
”
Dados da fonte de
2018-02-01
Acessado
2026-05-22
Cálculo
Mattick et al. (2018), Lancet Public Health 3(2):e64–e71. APSALS cohort, n=1,927 families, grades 7–12, Sydney/Perth/Hobart, 2010–2016. Adjusted odds ratios compare parental-supply-only group vs no-supply group controlling for multiple confounders. These ORs corroborate the Smolkowski harm-rate figure as the primary proxy. The OR 2.53 for alcohol-related harm among parental-supply recipients is directionally consistent with the 36% vs 21% raw rates across jurisdictions in Smolkowski.
[3]UNSW Sydney / National Drug and Alcohol Research Centre — The Lancet Public Health: Parental provision of alcohol to teenagers does not reduce risks, compared to no supply
Verificado
Fonte de referência
Teenagers supplied alcohol by only their parents in one year were twice as likely to access alcohol from other sources (e.g. friends) the following year, compared with teenagers given no alcohol at all.
Trecho
“"Importantly, teenagers supplied with alcohol by only their parents one year were twice as likely to access alcohol from other sources the next year."
”
Dados da fonte de
2018-01-01
Acessado
2026-07-03
Verificação
Trecho obtido novamente de forma independente e confirmado palavra por palavra em relação à fonte citada durante nossa auditoria de fundamentação.
Cálculo
UNSW/NDARC media release accompanying the Mattick et al. (2018) Lancet Public Health APSALS paper cited directly above (same cohort, n=1,927 families). Confirms the body-text "cross-over" claim: parental-only supply in a given year predicted a higher rate of subsequently sourcing alcohol from non-parental channels the following year — i.e. supervised access did not substitute for or delay access via other sources.
Fontes: inacção
Registro de evidências
Cada número abaixo é o que cada fonte relatou, com a citação literal em que nos baseamos e como chegamos ao nosso valor. Clique em qualquer link para verificar diretamente.
[1]Prevention Science (PMC) — Influence of Family Factors and Supervised Alcohol Use on Adolescent Alcohol Use and Harms: Similarities Between Youth in Different Alcohol Policy Contexts
Revisado por pares
21% of Washington State (prohibition context) students experienced any harmful alcohol consequence by grade 9; lower than the 36% rate in the Victoria (supervised drinking) context
Trecho
“"Adult-supervised settings for alcohol use were associated with higher levels of harmful alcohol consequences," contrary to harm-minimization policy predictions. Washington State students—in a zero-tolerance context—experienced 21% harmful consequences vs Victoria's 36%.
”
Dados da fonte de
2011-04-19
Acessado
2026-05-22
Cálculo
Same Smolkowski et al. (2011) cohort, Washington State subsample (n=874 of 1,888 total). Washington State enforces strict zero-tolerance underage alcohol laws; parental supervised drinking was reported by only 35% of students by grade 8 vs 66% in Victoria. The 21% harm rate in the prohibition-norm context is the inaction-side proxy: parents who maintained prohibition saw lower rates of immediate alcohol-related harm in their children.
[2]International Journal of Environmental Research and Public Health (PMC) — Parental Supply of Alcohol in Childhood and Risky Drinking in Adolescence: Systematic Review and Meta-Analysis
Revisado por pares
Pooled OR 2.00 (95% CI 1.72–2.32): parental supply of alcohol associated with twice the odds of subsequent risky drinking across 7 prospective studies
Trecho
“"Parental supply of alcohol in childhood is associated with an increased likelihood of risky drinking later in adolescence." Pooled OR 2.00 (95% CI 1.72–2.32) across 6 studies with 8 effect estimates from Sweden, USA, Netherlands, Australia.
”
Dados da fonte de
2017-03-01
Acessado
2026-05-22
Cálculo
Mattick et al. (2017), Int J Environ Res Public Health 14(3):287. Meta-analysis of 7 prospective longitudinal studies (6 in the pooled OR), sample sizes 428–2,625. The pooled OR 2.00 supports the no-supply (prohibition) inaction side as having roughly half the downstream risky drinking risk. The review notes methodological heterogeneity and cautious causal inference, consistent with the proxy-only framing of this entry.
Ressalvas
Ambos os lados usam taxas de dano à criança como proxies de arrependimento parental, não pesquisas diretas perguntando aos pais se eles se arrependem de sua decisão de fornecer álcool. Nenhum estudo em larga escala rastreou prospectivamente o arrependimento relatado pelos pais sobre acesso supervisionado versus proibido. As amostras de Victoria (proxy de ação) e do Estado de Washington (proxy de inação) vêm de ambientes culturais e políticos diferentes, portanto a comparação 36% vs 21% reflete parcialmente o contexto político em vez de apenas a decisão parental. As razões de chances Mattick et al. (2018) APSALS e o OR meta-analítico Mattick et al. (2017) de 2,00 corroboram a direção do efeito, mas não são medidas de arrependimento parental. Todos os estudos são observacionais; confundimento residual pela cultura familiar de bebida, status socioeconômico e temperamento da criança é plausível. O enquadramento de arrependimento também assume que o dano à criança mapeia diretamente para o arrependimento parental; alguns pais no grupo de acesso supervisionado podem não ver a bebida do seu filho como um dano que causaram, e alguns pais proibicionistas podem se arrepender de serem muito restritivos mesmo quando seu filho não desenvolveu problemas. A diferença de 15 pontos deve ser interpretada como uma direção de efeito, não um diferencial preciso de arrependimento bilateral.
