Table 1.

Pay-offs if sending signal is costly.

	receiver 1	receiver 2	receiver 3	receiver 4
sender 1	2-c, 2	1-c, 1	1.5-c, 1.5	1.5-c, 1.5
sender 2	1-c, 1	2-c, 2	1.5-c, 1.5	1.5-c, 1.5
sender 3	1.5-2c, 1.5	1.5-2c, 1.5	1.5-2c, 1.5	1.5-2c, 1.5
sender 4	1.5, 1.5	1.5, 1.5	1.5, 1.5	1.5, 1.5