Some of these sources will have more spectra than others. And some of these will point you to spectra in the literature.
Don't forget about Reaxys & SciFinder as sources of spectra.
Communication is divided into three parts - Words, Vocal Elements, and Nonverbal Elements
These parts are not equal partners in communication. Their contribution is roughly
In other words, vocal elements convey roughly 5 times more information than words. And nonverbal elements convey roughly 8 times more information than words. Therefore, it is extremely important that all the parts work together in communicating a message.
Below are five videos providing examples of when the vocal elements doesn't support the words. I call it upvoice but others call it uptalking or high rising terminals. Some of the videos also provide suggestions for being more confident in front of people.
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Identifying uptalk and other verbal crutches
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First impressions - Add to your credibility and authority as a speaker
End your sentences on a LOW pitch!
What are the three results of a higher pitch?
Speak with Conviction by Taylor Mali
According to Taylor Mali, what should you avoid when speaking? Listen for examples of uptalk.
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Techniques to reduce uptalk
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Minimize UPTALK to Sound Professional and Get Taken Seriously
What are the five techniques to help you minimize uptalk?
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Tips for becoming a better public speaker
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Body Language Expert Explains How to Show Confidence
Former FBI agent and body language expert Joe Navarro explains how we can project confidence through our body language. What does his company's research say about using UpTalk? What are the 3-4 tricks to help you be a better public speaker?