Survival models relating problem-solving latency in technical innovation, consumer innovation and neophobia as a function of habitat and a set of confounding variables.

In categorical variables (habitat, population, sex, food color and type of object), the reference category was set to zero and compared with the category shown between brackets. Variables that were retained in the minimum adequate model are indicated with an asterisk.针对栖息地、种群、性别、食物颜色与物体类型这类分类变量（categorical variable），其参照类别（reference category）被设为0，并与括号内标注的类别进行对比。在最小充分模型（minimum adequate model）中保留的变量以星号（asterisk）标注。