Aveda does not test their products on animals, but rather on willing human participants.

All of these measures encouraged researchers to obtain informed consent from human participants in experimental studies.

ASA became involved in the case to help protect human participants from the subpoena of confidential project research data.

The most important is that institutions should regard all significant financial interests in research involving human participants as potentially problematic.

But it could make for nervousness on the part of the human participants.

Experiments should not cause the human participants to suffer unnecessary distress or to be in any way physically harmed.

The more objective constraints on the judgments and skills of its human participants can be imposed, the better.

The Anzai strategies did reasonably well to mimic the performance on the task by human participants.

Sometimes the animals appear as accessories to scenes with human participants.

Models of this type allow researchers to systematically control important learning variables that are oftentimes difficult to manipulate at all in human participants.