APA style uses a hierarchical system of headings with different levels of formatting. This includes using boldface for all levels of headings, as well as different font sizes and alignment.
Here's a summary of how headings are formatted in APA style:
* Level 1 Heading: Centered, boldface, upper and lowercase
* Level 2 Heading: Flush left, boldface, upper and lowercase
* Level 3 Heading: Indented, boldface, upper and lowercase
* Level 4 Heading: Indented, boldface, italicized, upper and lowercase
* Level 5 Heading: Indented, boldface, italicized, sentence case
For more details on APA formatting, refer to the Publication Manual of the American Psychological Association.