1. The act of watching or monitoring something firsthand without intermediaries, filters, or indirect means
The researcher conducted direct observations of animal behavior in their natural habitat.
O pesquisador realizou observações diretas do comportamento animal em seu habitat natural.
2. In scientific research, data collection method involving personal witnessing of phenomena rather than relying on reports or measurements
Direct observations were essential to validate the experimental hypothesis.
As observações diretas foram essenciais para validar a hipótese experimental.