Problem: Spearman's research suggested intelligence is composed of one general factor (g), but Thurstone's research suggested it is composed of several primary mental abilities. Modern intelligence research suggests what on this issue? Need Assignment Help? Group of answer choices Spearman's g factor is reflected in each of Thurstone's primary mental abilities Spearman's g factor and Thurstone's primary mental abilities are completely unrelated Spearman's g factor is one of Thurstone's primary mental abilities Spearman's g factor exists, but Thurstone's primary mental abilities do not