Which of the following is a barrier to effective communication?

Overuse of abstractions is indeed a barrier to effective communication because it can lead to misunderstandings. When individuals rely heavily on abstract concepts or jargon rather than concrete examples or straightforward language, the intended message may become diluted or obscured. This can create confusion for listeners who may not share the same level of familiarity with the terminology being used.

Effective communication often hinges on the ability to convey information in a way that is accessible and clear. When speakers use overly abstract language, they may inadvertently alienate their audience, causing them to disengage or misinterpret the message. Communicating with clarity and specificity, often through concrete examples, fosters better understanding and connection between the speaker and the listener.

The other options you've encountered—such as active listening, clear vocabulary, and common background knowledge—actually enhance communication by promoting understanding and ensuring that messages are conveyed clearly and effectively.