13.: Us

Research into the early United States frequently highlights the recurring use of the number 13 as a symbol of unity among the original colonies:

The phrase "13. Us" likely refers to the or colonies that formed the United States. A "solid paper" looking at this topic often refers to historical and political analyses of the Great Seal of the United States or foundational documents like the Declaration of Independence . Foundational "13" Symbolism in the US 13. Us

While "13. Us" isn't a single standard psychology study name, research often touches on these related themes: Research into the early United States frequently highlights

: The design features 13 arrows, 13 olive leaves, and 13 letters in the motto E Pluribus Unum . Official explanations from the National Archives and Wikipedia note these represent the "solid compact" of the several states. Foundational "13" Symbolism in the US While "13

: A famous 2015 study attempted to replicate 100 psychology experiments, finding that only about one-third produced significant results, often with effect sizes half as strong as the originals.