Edit the author box title with Genesis (advanced version)

functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Edit the author box title with Genesis (advanced version)
 *
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/author-box-title/
 */
add_filter( 'genesis_author_box_title', 'rtug_author_box_title_context', 10, 2 );
function rtug_author_box_title_context( $title, $context ) {

	if ( 'single' === $context )
		$title = str_replace( 'About', 'This post was written by', $title );

	return $title;
}