An Anonymous Girl by Greer Hendriks & Sarah Pekkanen

For extra cash Jessica responds to an ad to participate in a psychological study on ethics and morality. She thinks it will be quick and easy but soon it starts to become more invasive and intense and he starts controlling parts of her life. She really starts to distrust this study when she feels like he knows what she is thinking and is manipulating her — making her not to know what to believe in her own life.