A researcher conducts a study with a seminar group of 18 undergraduate students to investigate group bias and stereotyping. The researcher randomly divides the students into two groups, distributing Red and Green wristbands. The Red group is told they performed exceptionally well on a pre-test and represent the "high-cognitive tier." The researcher gives them praise, front-row comfortable seating, and extra learning resources. The Green group is told they scored in the lowest percentile and are seated on plastic stools at the back of the room. When a Green group student asks for help, the researcher ignores them and tells the class: "It's clear that the Green wristband group lacks the aptitude for this level of work." In response, several Red group students joke about the Green students' abilities.
During the seminar, Green group students become visibly anxious, silent, and some begin to cry. Even after the session, Red group students refuse to sit with Green group students in the cafeteria, with one stating, "We shouldn't waste our time with low-performance individuals."
Explain two ways the study in the source was not ethically considerate. Justify your answer in relation to the source.