Douglas J. Herrmann Books

Memory Improvement
Memory Improvement

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Cognition and survey research
Cognition and survey research

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Introducing the theory and tools of cognitive aspects of survey methodology (CASM) - a movement that has greatly contributed to the evolving field of survey methods research - this collection of mo...

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Super memory
Super memory

By Douglas J. Herrmann

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Supergeheue
Supergeheue

By Dr. Douglas J. Herrmann

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If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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