(?G ? E) • (R ? M) $\frac{R \vee \sim \mathrm{G}}{\mathrm{E} \vee \mathrm{M}}$

question 9

Multiple Choice

(?G ? E) • (R ? M) $\frac{R \vee \sim \mathrm{G}}{\mathrm{E} \vee \mathrm{M}}$

• A) MT-valid.
• B) Invalid.
• C) DA-invalid.
• D) MP-valid.
• E) AC-invalid.

---

Definitions:

Dual Processing

The principle that our mind operates on two levels simultaneously: conscious and unconscious.

Cocktail Party Effect

The ability to focus one's listening attention on a single talker among a mixture of conversations and background noises.

Selective Attention

The cognitive process by which an individual focuses on one particular object or message among a range of stimuli, ignoring others.

Inattentional Blindness

The psychological phenomenon where an individual fails to perceive an unexpected stimulus in plain sight because their attention is engaged elsewhere.