preferred_name: Visually attends to examiner in midline without turning or turns head 15 degrees or less.
preferred_name_lc: visually attends to examiner in midline without turning or turns head 15 degrees or less.
label: Visually attends to examiner in midline without turning or turns head 15 degrees or less.
label_lc: visually attends to examiner in midline without turning or turns head 15 degrees or less.