null effect
[/nʌl ɪˈfɛkt/]
nounpl: null effects
efeito nulo
1. A result or outcome that shows no significant change, impact, or difference; the absence of an expected effect
The study showed a null effect, meaning the treatment had no measurable impact on the patients.
O estudo mostrou um efeito nulo, significando que o tratamento não teve impacto mensurável nos pacientes.
2. In statistics and research, a finding that fails to reject the null hypothesis, indicating no statistically significant relationship or difference
The experiment resulted in a null effect between the control and experimental groups.
O experimento resultou em um efeito nulo entre os grupos de controle e experimental.
3. A situation where an action or intervention produces no observable consequence
The medication had a null effect on the patient's symptoms.
O medicamento teve um efeito nulo sobre os sintomas do paciente.
The term 'null effect' is primarily used in academic, scientific, and statistical contexts in both American English and Brazilian Portuguese. It is particularly common in psychology, medicine, and social sciences research. The concept represents a crucial part of the scientific method, where researchers must report findings even when interventions do not produce expected results. In Brazil, this terminology is widely understood in university settings and research institutions.
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