∼(∃X)(Px • Qx) ≡ (∀X)(Px ⊃ ∼Qx)

question 199

Multiple Choice

∼(∃x) (Px • Qx) ≡ (∀x) (Px ⊃ ∼Qx)
-Consider assuming '∼(∃x) (Px • Qx) ' for a conditional proof of one direction of the biconditional in the above logical truth. Which of the following propositions is a legitimate second step in that proof?

• A) (∀x) ∼ (Px • Qx)
• B) Px ⊃ ∼Qx
• C) Px • Qx
• D) Pc • Qc
• E) ∼(∀x)(Px ⊃ ∼Qx)

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Definitions:

Predicting Behaviour

The process of forecasting individuals' actions based on factors such as past behavior, psychological tendencies, or situational variables.

Original Fishbein Model

An attitude model suggesting that an individual's attitude towards an object is a function of their beliefs about and evaluation of several of its attributes.

Descriptive Norm

Norms that convey information about what is commonly done in specific situations.

Immediate Setting

The direct physical environment surrounding an individual at any given time, which can influence behavior and perception.