Management skills refer to attributes that help executives accomplish organizational goals and include technical, human, and conceptual skills. Technical skills involve job-specific expertise, human skills are abilities to work well with others through communication and motivation, and conceptual skills are mental abilities to analyze complex situations and see how different organizational functions interact as a whole. Robert Katz proposed that managers at different levels need varying degrees of these three skill types, with technical skills most important for first-line managers, human skills important for all managers, and conceptual skills most critical for top-level managers.