The role of object-hypotheses in the organization of fragmented figures

The effect of an object-hypothesis on the organization of fragmented figures was investigated by varying instruction given prior to stimulus presentation. One group was uninformed as to the possibility of seeing a figure; a second group was instructed that it is possible to see a meaningful object; a third group was further instructed as to which class of object was presented. It was found that, in order to achieve organization of fragmented figures, the observer must have knowledge that a meaningful object may be integrated from the fragments. Knowledge of the class of object, while increasing the likelihood of recognition, does not significantly decrease search time.     

The Suicidal Ideation Attributes Scale (SIDAS): Community‐Based Validation Study of a New Scale for the Measurement of Suicidal Ideation

While suicide prevention efforts are increasingly being delivered using technology, no scales have been developed specifically for web‐based use. The Suicidal Ideation Attributes Scale (SIDAS) was developed and validated as a brief, web‐based measure for severity of suicidal ideation, using an online survey of Australian adults (n = 1,352). The SIDAS demonstrated high internal consistency and good convergent validity. Frequency and controllability of thoughts were more strongly associated with suicide plans and attempts than other attributes assessed. Scores ≥ 21 indicated high risk of suicide behavior. The SIDAS appears to be a valid web‐based measure for severity of suicidal ideation.