Semantics Processing of Conditional Connectives: German wenn 'if' Versus nur wenn 'only if'

Area of Science:

• Linguistics
• Cognitive Science
• Semantics

Background:

• Conditional connectives (CCs) in German, such as 'wenn' (if) and 'nur wenn' (only if), play a crucial role in expressing logical relationships.
• Understanding their precise semantic meaning, particularly whether they function biconditionally, is essential for linguistic and cognitive processing theories.

Purpose of the Study:

• To investigate the meaning and processing of German conditional connectives, specifically focusing on their interpretation as biconditional or non-biconditional.
• To compare the semantic properties of 'wenn', 'nur wenn', 'unter der Bedingung, dass' (on condition that), and 'vorausgesetzt, dass' (provided that).

Main Methods:

• Five experiments were conducted using scenarios with conditional sentences and varying antecedents (confirmed/negated).
• Participants engaged in tasks assessing the truth of consequents or completing sentences, testing logical inferences like Modus Ponens and Denial of the Antecedent.
• The study also employed Affirmation of the Consequent to further evaluate conditional interpretations.

Main Results:

• Neither 'wenn' nor 'nur wenn' were interpreted as biconditional connectives in any of the experiments.
• 'Modus Ponens' was validated for 'wenn' but not for 'nur wenn'.
• 'Denial of the Antecedent' was validated for 'nur wenn' but not for 'wenn'.
• 'Unter der Bedingung, dass' emerged as the most likely German connective to be interpreted biconditionally.

Conclusions:

• The findings indicate that 'unter der Bedingung, dass' is the primary German conditional connective with a biconditional meaning.
• Connectives like 'wenn' and 'nur wenn' do not exhibit biconditional semantics, challenging some formal analyses.
• The study provides empirical evidence for the distinct logical processing of German conditional connectives.