Six simple metrics focus on the effectiveness of interpersonal and team interactions, one of the chief hidden costs of business: Alignment Index - our ability to minimize the number of interactions, saving work for other issues; Dynamic Interaction - how changing team composition affects the interaction burden composed of new and lost interactions, Team Advantage - whether we achieve benefits from manipulating team composition, Entrepreneur Index - our ability to maintain personal opportunity and entrepreneurship amidst increasing job differentiation and empowerment erosion, Relationship Index - our ability to move beyond mere interactions to relational excellence, and Number of Interactions, revealing how much you'll spend on relationships. These metrics are shown below.

[Specific examples and applications are discussed in the book.]

SIX INTERACTION METRICS
METRIC		MEASURES	BASIS
1	Alignment Index	duplicate interactions in an ensemble of teams	AI = duplicate/total x 100
2	Dynamic Interaction	change in interactions between two time points, counting both new and lost interactions	DI = (new + lost) /unchanged x 100
3	Team Advantage	team advantage factors based on experience, performance, and familiarity	TA = experience x performance x familiarity
4	Entrepreneur Index	differentiation and empowerment in a division undergoing bureaucratic change	EI = empowered jobs/all jobs x 100
5	Relationship Index	strength of interpersonal interactions	RI = team ratings of their relationships
6	Number of Interactions	interaction time and complexity click HERE for the numbers	I = 2ⁿ⁺¹-n-2 total reporting relationships for n reports)