The fact that, when we look at an object, each one of our two eyes receives a slightly different image of the object is known as ______

A scientist, conducting a research study on sleep and learning, questions her own objectivity and decides to let a third person, not associated with conducting the experiment, score the tests. The scientist is probably trying to eliminate ______ bias

a. experimenter b. sample c. control d. treatment

Elena, a minority child who does not speak English at home, is presently learning a second language and will most likely experience additive bilingualism

Indicate whether the statement is true or false