void PrintTrials(int[,] trials)
{
string display = "trials: {";
for (int i = 0; i < totalTrials; i++) {
display += "{";
for (int j = 0; j < tasksPerTrial; j++) {
display += trials[i,j];
if (tasksPerTrial - j > 1)
display += ",";
}
display += "}";
if (totalTrials - i > 1)
display += ",";
}
display += "}";
Debug.Log (display);
}