Pigeons' spatial memory: factors affecting delayed matching of key location.

Control by sample location in pigeons' matching to sample.

Three experiments assessed the impact of sample location in pigeons' matching to sample. Experiments 1 and 2 demonstrated that after line or hue identity matching was acquired to high levels of accuracy with center-key samples, varying sample location across the three keys disrupted performances. The drop in accuracy occurred following both zero-delay and simultaneous training and was mostly co...

Spatial memory: behavioral determinants of persistence in the watermaze delayed matching-to-place task.

The watermaze delayed matching-to-place (DMP) task was modified to include probe trials, to quantify search preference for the correct place. Using a zone analysis of search preference, a gradual decay of one-trial memory in rats was observed over 24 h with weak memory consistently detected at a retention interval of 6 h, but unreliably at 24 h. This forgetting function in the watermaze was sim...

Spatial memory in pigeons on a four-arm radial maze.

Identifying and Analyzing Key Factors Affecting Singleness in Iran

In the past decades, social structures and institutions, including families, have been transformed by phenomena such as modernism, globalization and the expansion of communication networks. Transformation in the pattern of marriage and the age of marriage is one of the domains affected by these changes. In Iran, delay in marriage and increased Singleness have increased in recent years. The pur...

Identifying key factors affecting transnational knowledge transfer

Wewished to further understand Transnational Knowledge Transfer (TKT) in a not-for-profit context. To accomplish this, we explored, verified, and mapped out the key factors affecting TKT using a fourcomponent framework in the context of publically funded knowledge transfer (KT) projects. The Delphi technique was used to explore, identify, and verify the relevant key factors; 24 major factors we...