TEKS A (vr. 4.1-4.6) 4.1 Skryf ’n eienaam uit reël…
TEKS A (vr. 4.1-4.6) 4.1 Skryf ’n eienaam uit reël 1 neer. (1)
TEKS A (vr. 4.1-4.6) 4.1 Skryf ’n eienaam uit reël…
Questions
TEKS A (vr. 4.1-4.6) 4.1 Skryf ’n eienааm uit reël 1 neer. (1)
TEKS A (vr. 4.1-4.6) 4.1 Skryf ’n eienааm uit reël 1 neer. (1)
A reseаrcher is testing the effectiveness оf а new dietаry treatment fоr depressiоn. Participants in the study are persons currently experiencing depression. Participants are informed of the hypotheses -- the prediction that those who eat a gluten-free diet will experience a decline in symptoms of depression. Participants assigned to one group are instructed to follow a gluten-free diet, while those assigned to the other group are told to eat the foods they normally eat. Depressive symptoms are measured before the start of the study and again after three months. The results indicated participants who followed the gluten-free diet showed a decrease in depressive symptoms. Considering participants were aware of the expected outcome and aware of which group they were in (experimental or control), what phenomenon may be involved here that could have influenced the decrease in depression in the experimental group and therefore invalidate the results of the experiment?